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Finding the Fourth Proportional to 67,221.54, 100,848.90 and 27,789.92

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Solution

The fourth proportional to 67,221.54, 100,848.90 and 27,789.92 is: 41,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.54 : 100,848.90 = 27,789.92 : x
  2. Step 2: Convert to fraction form
    67,221.54/100,848.90 = 27,789.92/x
  3. Step 3: Cross multiply
    67,221.54x = 100,848.90 × 27,789.92
  4. Step 4: Simplify right side
    67,221.54x = 2,802,582,863.09
  5. Step 5: Solve for x
    x = 2,802,582,863.09/67,221.54
  6. Step 6: Final answer
    x = 41,691.74

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1.5x scale

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.