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Finding the Fourth Proportional to 68,902.56, 95,086.53 and 38,694.42

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Solution

The fourth proportional to 68,902.56, 95,086.53 and 38,694.42 is: 53,398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,902.56 : 95,086.53 = 38,694.42 : x
  2. Step 2: Convert to fraction form
    68,902.56/95,086.53 = 38,694.42/x
  3. Step 3: Cross multiply
    68,902.56x = 95,086.53 × 38,694.42
  4. Step 4: Simplify right side
    68,902.56x = 3,679,318,128.16
  5. Step 5: Solve for x
    x = 3,679,318,128.16/68,902.56
  6. Step 6: Final answer
    x = 53,398.86

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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.