Home / 87,121.52-120,264.39-58,865.48

Finding the Fourth Proportional to 87,121.52, 120,264.39 and 58,865.48

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Solution

The fourth proportional to 87,121.52, 120,264.39 and 58,865.48 is: 81,259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.52 : 120,264.39 = 58,865.48 : x
  2. Step 2: Convert to fraction form
    87,121.52/120,264.39 = 58,865.48/x
  3. Step 3: Cross multiply
    87,121.52x = 120,264.39 × 58,865.48
  4. Step 4: Simplify right side
    87,121.52x = 7,079,420,442.94
  5. Step 5: Solve for x
    x = 7,079,420,442.94/87,121.52
  6. Step 6: Final answer
    x = 81,259.15

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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.