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Finding the Fourth Proportional to 91,481, 137,123.06 and 59,791.36

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Solution

The fourth proportional to 91,481, 137,123.06 and 59,791.36 is: 89,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,481 : 137,123.06 = 59,791.36 : x
  2. Step 2: Convert to fraction form
    91,481/137,123.06 = 59,791.36/x
  3. Step 3: Cross multiply
    91,481x = 137,123.06 × 59,791.36
  4. Step 4: Simplify right side
    91,481x = 8,198,774,244.76
  5. Step 5: Solve for x
    x = 8,198,774,244.76/91,481
  6. Step 6: Final answer
    x = 89,622.70

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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.