Finding the Fourth Proportional to 86,619,720.12, 129,945,967.02 and 34,808,356.05
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Solution
The fourth proportional to 86,619,720.12, 129,945,967.02 and 34,808,356.05 is: 52,219,119.17
Step by Step Solution
- Step 1: Write the proportion equation
86,619,720.12 : 129,945,967.02 = 34,808,356.05 : x - Step 2: Convert to fraction form
86,619,720.12/129,945,967.02 = 34,808,356.05/x - Step 3: Cross multiply
86,619,720.12x = 129,945,967.02 × 34,808,356.05 - Step 4: Simplify right side
86,619,720.12x = 4,523,205,487,293,717 - Step 5: Solve for x
x = 4,523,205,487,293,717/86,619,720.12 - Step 6: Final answer
x = 52,219,119.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.