Excel formula to do without work fields

Hi Experts,

I have designed the attached spreadsheet, and am using the “Portion” figures as work fields to be used for generating the “Totals” figures, as you can see by the formulas.  Note that the "Portion" is based on the "Proportion" for that item.

My real data has a lot of rows in the top group, and not many in the bottom group, and I’d like to calculate the “Totals” figures without needing the “Portion” figures at all, if possible.

Any ideas on how I can achieve this?  I’m assuming the “Totals” formulas can be complexified to do this, but I don’t know how.

Ideally I'd like this to work in Excel 2003, but if that can't easily be done, 2007 would be OK.

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Pierre HubautCommented:
Hello Tel2,

For a given selected item, the proportion will always be the same (got from the bottom group list);
As a result, for a given item, the formula for Totals will calculate a sum of of terms each being a product of an amount and the constant proportion. You can use this property and rewrite your formula for Totals so to first add all amounts for a given item which is then multiplied by the proportion for this given item as follow:
Cell B7: =SUMIF($A$2:$A$4,"="&$A7,Sheet1!$B$2:$B$4)*$C7
Copy this formula to B8.
Portion is not used and can be deleted then -
This is illustrated by your amended spreadsheet  attached


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tel2Author Commented:
Looks great (at first glance), Pierre!

Not bad for someone who's answered 1 question in almost 12 years of membership!

Well thought through and explained.

I plan to check it more thoroughly later and get back to you.

tel2Author Commented:
Works beautifully, Pierre.

Thank you very much.

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