Finding the Fourth Proportional to 7,167,946.12, 9,891,761.26 and 3,948,682.12
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Solution
The fourth proportional to 7,167,946.12, 9,891,761.26 and 3,948,682.12 is: 5,449,178.91
Step by Step Solution
- Step 1: Write the proportion equation
7,167,946.12 : 9,891,761.26 = 3,948,682.12 : x - Step 2: Convert to fraction form
7,167,946.12/9,891,761.26 = 3,948,682.12/x - Step 3: Cross multiply
7,167,946.12x = 9,891,761.26 × 3,948,682.12 - Step 4: Simplify right side
7,167,946.12x = 39,059,420,822,670.67 - Step 5: Solve for x
x = 39,059,420,822,670.67/7,167,946.12 - Step 6: Final answer
x = 5,449,178.91
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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.