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Finding the Fourth Proportional to 57,306.80, 79,079.42 and 31,811.16

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Solution

The fourth proportional to 57,306.80, 79,079.42 and 31,811.16 is: 43,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,306.80 : 79,079.42 = 31,811.16 : x
  2. Step 2: Convert to fraction form
    57,306.80/79,079.42 = 31,811.16/x
  3. Step 3: Cross multiply
    57,306.80x = 79,079.42 × 31,811.16
  4. Step 4: Simplify right side
    57,306.80x = 2,515,608,082.33
  5. Step 5: Solve for x
    x = 2,515,608,082.33/57,306.80
  6. Step 6: Final answer
    x = 43,897.20

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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.