Home / 87,490.52-131,221.74-31,320.20

Finding the Fourth Proportional to 87,490.52, 131,221.74 and 31,320.20

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Solution

The fourth proportional to 87,490.52, 131,221.74 and 31,320.20 is: 46,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,490.52 : 131,221.74 = 31,320.20 : x
  2. Step 2: Convert to fraction form
    87,490.52/131,221.74 = 31,320.20/x
  3. Step 3: Cross multiply
    87,490.52x = 131,221.74 × 31,320.20
  4. Step 4: Simplify right side
    87,490.52x = 4,109,891,141.15
  5. Step 5: Solve for x
    x = 4,109,891,141.15/87,490.52
  6. Step 6: Final answer
    x = 46,975.27

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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.