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Finding the Fourth Proportional to 91,791.95, 137,593.20 and 38,514.87

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Solution

The fourth proportional to 91,791.95, 137,593.20 and 38,514.87 is: 57,732.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.95 : 137,593.20 = 38,514.87 : x
  2. Step 2: Convert to fraction form
    91,791.95/137,593.20 = 38,514.87/x
  3. Step 3: Cross multiply
    91,791.95x = 137,593.20 × 38,514.87
  4. Step 4: Simplify right side
    91,791.95x = 5,299,384,210.88
  5. Step 5: Solve for x
    x = 5,299,384,210.88/91,791.95
  6. Step 6: Final answer
    x = 57,732.56

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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.