Home / 87,534.45-131,324.94-31,380.24

Finding the Fourth Proportional to 87,534.45, 131,324.94 and 31,380.24

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Solution

The fourth proportional to 87,534.45, 131,324.94 and 31,380.24 is: 47,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,534.45 : 131,324.94 = 31,380.24 : x
  2. Step 2: Convert to fraction form
    87,534.45/131,324.94 = 31,380.24/x
  3. Step 3: Cross multiply
    87,534.45x = 131,324.94 × 31,380.24
  4. Step 4: Simplify right side
    87,534.45x = 4,121,008,135.19
  5. Step 5: Solve for x
    x = 4,121,008,135.19/87,534.45
  6. Step 6: Final answer
    x = 47,078.70

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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.