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Finding the Fourth Proportional to 83,229.54, 124,875.74 and 49,972.78

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Solution

The fourth proportional to 83,229.54, 124,875.74 and 49,972.78 is: 74,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,229.54 : 124,875.74 = 49,972.78 : x
  2. Step 2: Convert to fraction form
    83,229.54/124,875.74 = 49,972.78/x
  3. Step 3: Cross multiply
    83,229.54x = 124,875.74 × 49,972.78
  4. Step 4: Simplify right side
    83,229.54x = 6,240,388,163.38
  5. Step 5: Solve for x
    x = 6,240,388,163.38/83,229.54
  6. Step 6: Final answer
    x = 74,978.05

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1.5x scale

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.