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Finding the Fourth Proportional to 75,049.92, 103,474.80 and 48,144.96

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Solution

The fourth proportional to 75,049.92, 103,474.80 and 48,144.96 is: 66,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,049.92 : 103,474.80 = 48,144.96 : x
  2. Step 2: Convert to fraction form
    75,049.92/103,474.80 = 48,144.96/x
  3. Step 3: Cross multiply
    75,049.92x = 103,474.80 × 48,144.96
  4. Step 4: Simplify right side
    75,049.92x = 4,981,790,107.01
  5. Step 5: Solve for x
    x = 4,981,790,107.01/75,049.92
  6. Step 6: Final answer
    x = 66,379.69

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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.