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Finding the Fourth Proportional to 57,359, 79,168.07 and 31,874.11

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Solution

The fourth proportional to 57,359, 79,168.07 and 31,874.11 is: 43,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,359 : 79,168.07 = 31,874.11 : x
  2. Step 2: Convert to fraction form
    57,359/79,168.07 = 31,874.11/x
  3. Step 3: Cross multiply
    57,359x = 79,168.07 × 31,874.11
  4. Step 4: Simplify right side
    57,359x = 2,523,411,771.67
  5. Step 5: Solve for x
    x = 2,523,411,771.67/57,359
  6. Step 6: Final answer
    x = 43,993.30

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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.