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Finding the Fourth Proportional to 66,691.29, 100,042.17 and 22,318.20

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Solution

The fourth proportional to 66,691.29, 100,042.17 and 22,318.20 is: 33,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,691.29 : 100,042.17 = 22,318.20 : x
  2. Step 2: Convert to fraction form
    66,691.29/100,042.17 = 22,318.20/x
  3. Step 3: Cross multiply
    66,691.29x = 100,042.17 × 22,318.20
  4. Step 4: Simplify right side
    66,691.29x = 2,232,761,158.49
  5. Step 5: Solve for x
    x = 2,232,761,158.49/66,691.29
  6. Step 6: Final answer
    x = 33,479.05

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1.5x scale

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.