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Finding the Fourth Proportional to 72,301.92, 108,369.60 and 27,909.12

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Solution

The fourth proportional to 72,301.92, 108,369.60 and 27,909.12 is: 41,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.92 : 108,369.60 = 27,909.12 : x
  2. Step 2: Convert to fraction form
    72,301.92/108,369.60 = 27,909.12/x
  3. Step 3: Cross multiply
    72,301.92x = 108,369.60 × 27,909.12
  4. Step 4: Simplify right side
    72,301.92x = 3,024,500,170.75
  5. Step 5: Solve for x
    x = 3,024,500,170.75/72,301.92
  6. Step 6: Final answer
    x = 41,831.53

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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.