Home / 87,761.09-131,560.87-47,721.58

Finding the Fourth Proportional to 87,761.09, 131,560.87 and 47,721.58

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Solution

The fourth proportional to 87,761.09, 131,560.87 and 47,721.58 is: 71,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,761.09 : 131,560.87 = 47,721.58 : x
  2. Step 2: Convert to fraction form
    87,761.09/131,560.87 = 47,721.58/x
  3. Step 3: Cross multiply
    87,761.09x = 131,560.87 × 47,721.58
  4. Step 4: Simplify right side
    87,761.09x = 6,278,292,582.57
  5. Step 5: Solve for x
    x = 6,278,292,582.57/87,761.09
  6. Step 6: Final answer
    x = 71,538.45

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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.