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Finding the Fourth Proportional to 65,757.26, 90,722.80 and 37,442.90

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Solution

The fourth proportional to 65,757.26, 90,722.80 and 37,442.90 is: 51,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,757.26 : 90,722.80 = 37,442.90 : x
  2. Step 2: Convert to fraction form
    65,757.26/90,722.80 = 37,442.90/x
  3. Step 3: Cross multiply
    65,757.26x = 90,722.80 × 37,442.90
  4. Step 4: Simplify right side
    65,757.26x = 3,396,924,728.12
  5. Step 5: Solve for x
    x = 3,396,924,728.12/65,757.26
  6. Step 6: Final answer
    x = 51,658.55

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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.