Home / 87,854.86-121,248.39-50,134.78

Finding the Fourth Proportional to 87,854.86, 121,248.39 and 50,134.78

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Solution

The fourth proportional to 87,854.86, 121,248.39 and 50,134.78 is: 69,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.86 : 121,248.39 = 50,134.78 : x
  2. Step 2: Convert to fraction form
    87,854.86/121,248.39 = 50,134.78/x
  3. Step 3: Cross multiply
    87,854.86x = 121,248.39 × 50,134.78
  4. Step 4: Simplify right side
    87,854.86x = 6,078,761,358.00
  5. Step 5: Solve for x
    x = 6,078,761,358.00/87,854.86
  6. Step 6: Final answer
    x = 69,190.95

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1.5x scale

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.