Home / 87,939.10-131,908.65-31,806.10

Finding the Fourth Proportional to 87,939.10, 131,908.65 and 31,806.10

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Solution

The fourth proportional to 87,939.10, 131,908.65 and 31,806.10 is: 47,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.10 : 131,908.65 = 31,806.10 : x
  2. Step 2: Convert to fraction form
    87,939.10/131,908.65 = 31,806.10/x
  3. Step 3: Cross multiply
    87,939.10x = 131,908.65 × 31,806.10
  4. Step 4: Simplify right side
    87,939.10x = 4,195,499,712.77
  5. Step 5: Solve for x
    x = 4,195,499,712.77/87,939.10
  6. Step 6: Final answer
    x = 47,709.15

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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.