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Finding the Fourth Proportional to 66,489.66, 99,753.12 and 29,053.08

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Solution

The fourth proportional to 66,489.66, 99,753.12 and 29,053.08 is: 43,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,489.66 : 99,753.12 = 29,053.08 : x
  2. Step 2: Convert to fraction form
    66,489.66/99,753.12 = 29,053.08/x
  3. Step 3: Cross multiply
    66,489.66x = 99,753.12 × 29,053.08
  4. Step 4: Simplify right side
    66,489.66x = 2,898,135,375.61
  5. Step 5: Solve for x
    x = 2,898,135,375.61/66,489.66
  6. Step 6: Final answer
    x = 43,587.76

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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.