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Finding the Fourth Proportional to 72,143.32, 108,220.32 and 24,761.92

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Solution

The fourth proportional to 72,143.32, 108,220.32 and 24,761.92 is: 37,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.32 : 108,220.32 = 24,761.92 : x
  2. Step 2: Convert to fraction form
    72,143.32/108,220.32 = 24,761.92/x
  3. Step 3: Cross multiply
    72,143.32x = 108,220.32 × 24,761.92
  4. Step 4: Simplify right side
    72,143.32x = 2,679,742,906.21
  5. Step 5: Solve for x
    x = 2,679,742,906.21/72,143.32
  6. Step 6: Final answer
    x = 37,144.71

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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.