Finding the Fourth Proportional to 71,732,909.70, 99,021,960.10 and 48,225,080.12
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Solution
The fourth proportional to 71,732,909.70, 99,021,960.10 and 48,225,080.12 is: 66,571,145.37
Step by Step Solution
- Step 1: Write the proportion equation
71,732,909.70 : 99,021,960.10 = 48,225,080.12 : x - Step 2: Convert to fraction form
71,732,909.70/99,021,960.10 = 48,225,080.12/x - Step 3: Cross multiply
71,732,909.70x = 99,021,960.10 × 48,225,080.12 - Step 4: Simplify right side
71,732,909.70x = 4,775,341,959,461,943 - Step 5: Solve for x
x = 4,775,341,959,461,943/71,732,909.70 - Step 6: Final answer
x = 66,571,145.37
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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.