Home / 87,869.97-131,777.69-31,702.78

Finding the Fourth Proportional to 87,869.97, 131,777.69 and 31,702.78

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Solution

The fourth proportional to 87,869.97, 131,777.69 and 31,702.78 is: 47,544.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,869.97 : 131,777.69 = 31,702.78 : x
  2. Step 2: Convert to fraction form
    87,869.97/131,777.69 = 31,702.78/x
  3. Step 3: Cross multiply
    87,869.97x = 131,777.69 × 31,702.78
  4. Step 4: Simplify right side
    87,869.97x = 4,177,718,864.79
  5. Step 5: Solve for x
    x = 4,177,718,864.79/87,869.97
  6. Step 6: Final answer
    x = 47,544.33

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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.