Home / 87,886.62-121,277.52-49,121.91

Finding the Fourth Proportional to 87,886.62, 121,277.52 and 49,121.91

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Solution

The fourth proportional to 87,886.62, 121,277.52 and 49,121.91 is: 67,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,886.62 : 121,277.52 = 49,121.91 : x
  2. Step 2: Convert to fraction form
    87,886.62/121,277.52 = 49,121.91/x
  3. Step 3: Cross multiply
    87,886.62x = 121,277.52 × 49,121.91
  4. Step 4: Simplify right side
    87,886.62x = 5,957,383,422.46
  5. Step 5: Solve for x
    x = 5,957,383,422.46/87,886.62
  6. Step 6: Final answer
    x = 67,784.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.