Home / 87,422.61-120,527.08-57,155.91

Finding the Fourth Proportional to 87,422.61, 120,527.08 and 57,155.91

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Solution

The fourth proportional to 87,422.61, 120,527.08 and 57,155.91 is: 78,799.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,422.61 : 120,527.08 = 57,155.91 : x
  2. Step 2: Convert to fraction form
    87,422.61/120,527.08 = 57,155.91/x
  3. Step 3: Cross multiply
    87,422.61x = 120,527.08 × 57,155.91
  4. Step 4: Simplify right side
    87,422.61x = 6,888,834,937.04
  5. Step 5: Solve for x
    x = 6,888,834,937.04/87,422.61
  6. Step 6: Final answer
    x = 78,799.24

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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.