Home / 87,939.62-131,881.73-28,761.47

Finding the Fourth Proportional to 87,939.62, 131,881.73 and 28,761.47

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Solution

The fourth proportional to 87,939.62, 131,881.73 and 28,761.47 is: 43,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.62 : 131,881.73 = 28,761.47 : x
  2. Step 2: Convert to fraction form
    87,939.62/131,881.73 = 28,761.47/x
  3. Step 3: Cross multiply
    87,939.62x = 131,881.73 × 28,761.47
  4. Step 4: Simplify right side
    87,939.62x = 3,793,112,822.55
  5. Step 5: Solve for x
    x = 3,793,112,822.55/87,939.62
  6. Step 6: Final answer
    x = 43,133.15

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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.