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Finding the Fourth Proportional to 83,305.95, 124,957.69 and 20,125.53

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Solution

The fourth proportional to 83,305.95, 124,957.69 and 20,125.53 is: 30,188.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,305.95 : 124,957.69 = 20,125.53 : x
  2. Step 2: Convert to fraction form
    83,305.95/124,957.69 = 20,125.53/x
  3. Step 3: Cross multiply
    83,305.95x = 124,957.69 × 20,125.53
  4. Step 4: Simplify right side
    83,305.95x = 2,514,839,738.83
  5. Step 5: Solve for x
    x = 2,514,839,738.83/83,305.95
  6. Step 6: Final answer
    x = 30,188.00

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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.