Home / 83,839.57-115,691.70-49,378.93

Finding the Fourth Proportional to 83,839.57, 115,691.70 and 49,378.93

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Solution

The fourth proportional to 83,839.57, 115,691.70 and 49,378.93 is: 68,138.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,839.57 : 115,691.70 = 49,378.93 : x
  2. Step 2: Convert to fraction form
    83,839.57/115,691.70 = 49,378.93/x
  3. Step 3: Cross multiply
    83,839.57x = 115,691.70 × 49,378.93
  4. Step 4: Simplify right side
    83,839.57x = 5,712,732,355.88
  5. Step 5: Solve for x
    x = 5,712,732,355.88/83,839.57
  6. Step 6: Final answer
    x = 68,138.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.