Home / 83,631.42-115,507.17-55,078.68

Finding the Fourth Proportional to 83,631.42, 115,507.17 and 55,078.68

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Solution

The fourth proportional to 83,631.42, 115,507.17 and 55,078.68 is: 76,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,631.42 : 115,507.17 = 55,078.68 : x
  2. Step 2: Convert to fraction form
    83,631.42/115,507.17 = 55,078.68/x
  3. Step 3: Cross multiply
    83,631.42x = 115,507.17 × 55,078.68
  4. Step 4: Simplify right side
    83,631.42x = 6,361,982,454.14
  5. Step 5: Solve for x
    x = 6,361,982,454.14/83,631.42
  6. Step 6: Final answer
    x = 76,071.68

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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.