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Finding the Fourth Proportional to 57,366.38, 79,164.39 and 31,872.79

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Solution

The fourth proportional to 57,366.38, 79,164.39 and 31,872.79 is: 43,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,366.38 : 79,164.39 = 31,872.79 : x
  2. Step 2: Convert to fraction form
    57,366.38/79,164.39 = 31,872.79/x
  3. Step 3: Cross multiply
    57,366.38x = 79,164.39 × 31,872.79
  4. Step 4: Simplify right side
    57,366.38x = 2,523,190,017.14
  5. Step 5: Solve for x
    x = 2,523,190,017.14/57,366.38
  6. Step 6: Final answer
    x = 43,983.78

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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.