Home / 86,103-129,175.20-29,934.90

Finding the Fourth Proportional to 86,103, 129,175.20 and 29,934.90

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Solution

The fourth proportional to 86,103, 129,175.20 and 29,934.90 is: 44,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,103 : 129,175.20 = 29,934.90 : x
  2. Step 2: Convert to fraction form
    86,103/129,175.20 = 29,934.90/x
  3. Step 3: Cross multiply
    86,103x = 129,175.20 × 29,934.90
  4. Step 4: Simplify right side
    86,103x = 3,866,846,694.48
  5. Step 5: Solve for x
    x = 3,866,846,694.48/86,103
  6. Step 6: Final answer
    x = 44,909.55

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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.