Home / 83,613.03-115,385.40-45,371.61

Finding the Fourth Proportional to 83,613.03, 115,385.40 and 45,371.61

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Solution

The fourth proportional to 83,613.03, 115,385.40 and 45,371.61 is: 62,612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,613.03 : 115,385.40 = 45,371.61 : x
  2. Step 2: Convert to fraction form
    83,613.03/115,385.40 = 45,371.61/x
  3. Step 3: Cross multiply
    83,613.03x = 115,385.40 × 45,371.61
  4. Step 4: Simplify right side
    83,613.03x = 5,235,221,141.64
  5. Step 5: Solve for x
    x = 5,235,221,141.64/83,613.03
  6. Step 6: Final answer
    x = 62,612.50

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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.