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Finding the Fourth Proportional to 71,337.78, 107,022.87 and 38,040.30

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Solution

The fourth proportional to 71,337.78, 107,022.87 and 38,040.30 is: 57,069.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,337.78 : 107,022.87 = 38,040.30 : x
  2. Step 2: Convert to fraction form
    71,337.78/107,022.87 = 38,040.30/x
  3. Step 3: Cross multiply
    71,337.78x = 107,022.87 × 38,040.30
  4. Step 4: Simplify right side
    71,337.78x = 4,071,182,081.66
  5. Step 5: Solve for x
    x = 4,071,182,081.66/71,337.78
  6. Step 6: Final answer
    x = 57,069.09

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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.