Home / 83,390.12-115,078.19-45,149.48

Finding the Fourth Proportional to 83,390.12, 115,078.19 and 45,149.48

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Solution

The fourth proportional to 83,390.12, 115,078.19 and 45,149.48 is: 62,306.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,390.12 : 115,078.19 = 45,149.48 : x
  2. Step 2: Convert to fraction form
    83,390.12/115,078.19 = 45,149.48/x
  3. Step 3: Cross multiply
    83,390.12x = 115,078.19 × 45,149.48
  4. Step 4: Simplify right side
    83,390.12x = 5,195,719,636.70
  5. Step 5: Solve for x
    x = 5,195,719,636.70/83,390.12
  6. Step 6: Final answer
    x = 62,306.18

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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.