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Finding the Fourth Proportional to 83,304.95, 124,956.20 and 20,124.53

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Solution

The fourth proportional to 83,304.95, 124,956.20 and 20,124.53 is: 30,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,304.95 : 124,956.20 = 20,124.53 : x
  2. Step 2: Convert to fraction form
    83,304.95/124,956.20 = 20,124.53/x
  3. Step 3: Cross multiply
    83,304.95x = 124,956.20 × 20,124.53
  4. Step 4: Simplify right side
    83,304.95x = 2,514,684,694.96
  5. Step 5: Solve for x
    x = 2,514,684,694.96/83,304.95
  6. Step 6: Final answer
    x = 30,186.50

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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.