Home / 83,221.40-124,759.20-49,906.10

Finding the Fourth Proportional to 83,221.40, 124,759.20 and 49,906.10

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Solution

The fourth proportional to 83,221.40, 124,759.20 and 49,906.10 is: 74,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,221.40 : 124,759.20 = 49,906.10 : x
  2. Step 2: Convert to fraction form
    83,221.40/124,759.20 = 49,906.10/x
  3. Step 3: Cross multiply
    83,221.40x = 124,759.20 × 49,906.10
  4. Step 4: Simplify right side
    83,221.40x = 6,226,245,111.12
  5. Step 5: Solve for x
    x = 6,226,245,111.12/83,221.40
  6. Step 6: Final answer
    x = 74,815.43

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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.