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Finding the Fourth Proportional to 83,710.87, 125,511.78 and 30,392.82

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Solution

The fourth proportional to 83,710.87, 125,511.78 and 30,392.82 is: 45,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,710.87 : 125,511.78 = 30,392.82 : x
  2. Step 2: Convert to fraction form
    83,710.87/125,511.78 = 30,392.82/x
  3. Step 3: Cross multiply
    83,710.87x = 125,511.78 × 30,392.82
  4. Step 4: Simplify right side
    83,710.87x = 3,814,656,937.42
  5. Step 5: Solve for x
    x = 3,814,656,937.42/83,710.87
  6. Step 6: Final answer
    x = 45,569.43

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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.