Home / 81,379.52-112,298.08-54,517.68

Finding the Fourth Proportional to 81,379.52, 112,298.08 and 54,517.68

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Solution

The fourth proportional to 81,379.52, 112,298.08 and 54,517.68 is: 75,230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,379.52 : 112,298.08 = 54,517.68 : x
  2. Step 2: Convert to fraction form
    81,379.52/112,298.08 = 54,517.68/x
  3. Step 3: Cross multiply
    81,379.52x = 112,298.08 × 54,517.68
  4. Step 4: Simplify right side
    81,379.52x = 6,122,230,790.05
  5. Step 5: Solve for x
    x = 6,122,230,790.05/81,379.52
  6. Step 6: Final answer
    x = 75,230.61

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1.5x scale

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.