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Finding the Fourth Proportional to 57,747.28, 79,660.92 and 36,489.64

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Solution

The fourth proportional to 57,747.28, 79,660.92 and 36,489.64 is: 50,336.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,747.28 : 79,660.92 = 36,489.64 : x
  2. Step 2: Convert to fraction form
    57,747.28/79,660.92 = 36,489.64/x
  3. Step 3: Cross multiply
    57,747.28x = 79,660.92 × 36,489.64
  4. Step 4: Simplify right side
    57,747.28x = 2,906,798,292.87
  5. Step 5: Solve for x
    x = 2,906,798,292.87/57,747.28
  6. Step 6: Final answer
    x = 50,336.54

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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.