Home / 87,631.10-131,446.65-31,498.10

Finding the Fourth Proportional to 87,631.10, 131,446.65 and 31,498.10

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Solution

The fourth proportional to 87,631.10, 131,446.65 and 31,498.10 is: 47,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.10 : 131,446.65 = 31,498.10 : x
  2. Step 2: Convert to fraction form
    87,631.10/131,446.65 = 31,498.10/x
  3. Step 3: Cross multiply
    87,631.10x = 131,446.65 × 31,498.10
  4. Step 4: Simplify right side
    87,631.10x = 4,140,319,726.37
  5. Step 5: Solve for x
    x = 4,140,319,726.37/87,631.10
  6. Step 6: Final answer
    x = 47,247.15

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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.