Finding the Fourth Proportional to 91,798.83, 126,610.97 and 66,400.47
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Solution
The fourth proportional to 91,798.83, 126,610.97 and 66,400.47 is: 91,580.99
Step by Step Solution
- Step 1: Write the proportion equation
91,798.83 : 126,610.97 = 66,400.47 : x - Step 2: Convert to fraction form
91,798.83/126,610.97 = 66,400.47/x - Step 3: Cross multiply
91,798.83x = 126,610.97 × 66,400.47 - Step 4: Simplify right side
91,798.83x = 8,407,027,583.15 - Step 5: Solve for x
x = 8,407,027,583.15/91,798.83 - Step 6: Final answer
x = 91,580.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.