Finding the Fourth Proportional to 71,505,312.11, 107,258,964.62 and 20,387,330.92
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Solution
The fourth proportional to 71,505,312.11, 107,258,964.62 and 20,387,330.92 is: 30,581,280.49
Step by Step Solution
- Step 1: Write the proportion equation
71,505,312.11 : 107,258,964.62 = 20,387,330.92 : x - Step 2: Convert to fraction form
71,505,312.11/107,258,964.62 = 20,387,330.92/x - Step 3: Cross multiply
71,505,312.11x = 107,258,964.62 × 20,387,330.92 - Step 4: Simplify right side
71,505,312.11x = 2,186,724,005,876,649 - Step 5: Solve for x
x = 2,186,724,005,876,649/71,505,312.11 - Step 6: Final answer
x = 30,581,280.49
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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.