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Finding the Fourth Proportional to 65,311.52, 90,129.92 and 37,017.41

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Solution

The fourth proportional to 65,311.52, 90,129.92 and 37,017.41 is: 51,084.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,311.52 : 90,129.92 = 37,017.41 : x
  2. Step 2: Convert to fraction form
    65,311.52/90,129.92 = 37,017.41/x
  3. Step 3: Cross multiply
    65,311.52x = 90,129.92 × 37,017.41
  4. Step 4: Simplify right side
    65,311.52x = 3,336,375,566.17
  5. Step 5: Solve for x
    x = 3,336,375,566.17/65,311.52
  6. Step 6: Final answer
    x = 51,084.03

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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.