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Finding the Fourth Proportional to 87,155.90, 130,716.63 and 23,959.71

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Solution

The fourth proportional to 87,155.90, 130,716.63 and 23,959.71 is: 35,934.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,155.90 : 130,716.63 = 23,959.71 : x
  2. Step 2: Convert to fraction form
    87,155.90/130,716.63 = 23,959.71/x
  3. Step 3: Cross multiply
    87,155.90x = 130,716.63 × 23,959.71
  4. Step 4: Simplify right side
    87,155.90x = 3,131,932,546.98
  5. Step 5: Solve for x
    x = 3,131,932,546.98/87,155.90
  6. Step 6: Final answer
    x = 35,934.83

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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.