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Finding the Fourth Proportional to 57,369.80, 79,167.75 and 31,877.95

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Solution

The fourth proportional to 57,369.80, 79,167.75 and 31,877.95 is: 43,990.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,369.80 : 79,167.75 = 31,877.95 : x
  2. Step 2: Convert to fraction form
    57,369.80/79,167.75 = 31,877.95/x
  3. Step 3: Cross multiply
    57,369.80x = 79,167.75 × 31,877.95
  4. Step 4: Simplify right side
    57,369.80x = 2,523,705,576.11
  5. Step 5: Solve for x
    x = 2,523,705,576.11/57,369.80
  6. Step 6: Final answer
    x = 43,990.14

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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.