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Finding the Fourth Proportional to 72,089.61, 108,134.42 and 32,645.85

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Solution

The fourth proportional to 72,089.61, 108,134.42 and 32,645.85 is: 48,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,089.61 : 108,134.42 = 32,645.85 : x
  2. Step 2: Convert to fraction form
    72,089.61/108,134.42 = 32,645.85/x
  3. Step 3: Cross multiply
    72,089.61x = 108,134.42 × 32,645.85
  4. Step 4: Simplify right side
    72,089.61x = 3,530,139,891.93
  5. Step 5: Solve for x
    x = 3,530,139,891.93/72,089.61
  6. Step 6: Final answer
    x = 48,968.78

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Similar ratio
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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.