Finding the Fourth Proportional to 77,915,417.22, 107,526,440.79 and 43,107,540.75
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Solution
The fourth proportional to 77,915,417.22, 107,526,440.79 and 43,107,540.75 is: 59,490,157.32
Step by Step Solution
- Step 1: Write the proportion equation
77,915,417.22 : 107,526,440.79 = 43,107,540.75 : x - Step 2: Convert to fraction form
77,915,417.22/107,526,440.79 = 43,107,540.75/x - Step 3: Cross multiply
77,915,417.22x = 107,526,440.79 × 43,107,540.75 - Step 4: Simplify right side
77,915,417.22x = 4,635,200,428,057,387 - Step 5: Solve for x
x = 4,635,200,428,057,387/77,915,417.22 - Step 6: Final answer
x = 59,490,157.32
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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.