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Finding the Fourth Proportional to 81,111.92, 121,658.28 and 24,951.92

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Solution

The fourth proportional to 81,111.92, 121,658.28 and 24,951.92 is: 37,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,111.92 : 121,658.28 = 24,951.92 : x
  2. Step 2: Convert to fraction form
    81,111.92/121,658.28 = 24,951.92/x
  3. Step 3: Cross multiply
    81,111.92x = 121,658.28 × 24,951.92
  4. Step 4: Simplify right side
    81,111.92x = 3,035,607,669.90
  5. Step 5: Solve for x
    x = 3,035,607,669.90/81,111.92
  6. Step 6: Final answer
    x = 37,424.93

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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.