Home / 80,964.30-121,446.45-61,281.30

Finding the Fourth Proportional to 80,964.30, 121,446.45 and 61,281.30

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Solution

The fourth proportional to 80,964.30, 121,446.45 and 61,281.30 is: 91,921.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,964.30 : 121,446.45 = 61,281.30 : x
  2. Step 2: Convert to fraction form
    80,964.30/121,446.45 = 61,281.30/x
  3. Step 3: Cross multiply
    80,964.30x = 121,446.45 × 61,281.30
  4. Step 4: Simplify right side
    80,964.30x = 7,442,396,336.39
  5. Step 5: Solve for x
    x = 7,442,396,336.39/80,964.30
  6. Step 6: Final answer
    x = 91,921.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.