Home / 83,390.20-115,078.56-45,149.77

Finding the Fourth Proportional to 83,390.20, 115,078.56 and 45,149.77

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Solution

The fourth proportional to 83,390.20, 115,078.56 and 45,149.77 is: 62,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,390.20 : 115,078.56 = 45,149.77 : x
  2. Step 2: Convert to fraction form
    83,390.20/115,078.56 = 45,149.77/x
  3. Step 3: Cross multiply
    83,390.20x = 115,078.56 × 45,149.77
  4. Step 4: Simplify right side
    83,390.20x = 5,195,770,515.93
  5. Step 5: Solve for x
    x = 5,195,770,515.93/83,390.20
  6. Step 6: Final answer
    x = 62,306.73

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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.