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Finding the Fourth Proportional to 66,956.78, 100,397.11 and 51,753.97

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Solution

The fourth proportional to 66,956.78, 100,397.11 and 51,753.97 is: 77,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,956.78 : 100,397.11 = 51,753.97 : x
  2. Step 2: Convert to fraction form
    66,956.78/100,397.11 = 51,753.97/x
  3. Step 3: Cross multiply
    66,956.78x = 100,397.11 × 51,753.97
  4. Step 4: Simplify right side
    66,956.78x = 5,195,949,019.03
  5. Step 5: Solve for x
    x = 5,195,949,019.03/66,956.78
  6. Step 6: Final answer
    x = 77,601.54

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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.