Home / 87,974.61-131,960.79-21,414.80

Finding the Fourth Proportional to 87,974.61, 131,960.79 and 21,414.80

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Solution

The fourth proportional to 87,974.61, 131,960.79 and 21,414.80 is: 32,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.61 : 131,960.79 = 21,414.80 : x
  2. Step 2: Convert to fraction form
    87,974.61/131,960.79 = 21,414.80/x
  3. Step 3: Cross multiply
    87,974.61x = 131,960.79 × 21,414.80
  4. Step 4: Simplify right side
    87,974.61x = 2,825,913,265.89
  5. Step 5: Solve for x
    x = 2,825,913,265.89/87,974.61
  6. Step 6: Final answer
    x = 32,121.92

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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.