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Finding the Fourth Proportional to 57,371.80, 79,170.51 and 31,879.96

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Solution

The fourth proportional to 57,371.80, 79,170.51 and 31,879.96 is: 43,992.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,371.80 : 79,170.51 = 31,879.96 : x
  2. Step 2: Convert to fraction form
    57,371.80/79,170.51 = 31,879.96/x
  3. Step 3: Cross multiply
    57,371.80x = 79,170.51 × 31,879.96
  4. Step 4: Simplify right side
    57,371.80x = 2,523,952,691.98
  5. Step 5: Solve for x
    x = 2,523,952,691.98/57,371.80
  6. Step 6: Final answer
    x = 43,992.91

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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.