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Finding the Fourth Proportional to 57,920.88, 79,939.40 and 36,702.12

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Solution

The fourth proportional to 57,920.88, 79,939.40 and 36,702.12 is: 50,654.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,920.88 : 79,939.40 = 36,702.12 : x
  2. Step 2: Convert to fraction form
    57,920.88/79,939.40 = 36,702.12/x
  3. Step 3: Cross multiply
    57,920.88x = 79,939.40 × 36,702.12
  4. Step 4: Simplify right side
    57,920.88x = 2,933,945,451.53
  5. Step 5: Solve for x
    x = 2,933,945,451.53/57,920.88
  6. Step 6: Final answer
    x = 50,654.37

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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.