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Finding the Fourth Proportional to 65,912.55, 90,964.92 and 37,237.48

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Solution

The fourth proportional to 65,912.55, 90,964.92 and 37,237.48 is: 51,390.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,912.55 : 90,964.92 = 37,237.48 : x
  2. Step 2: Convert to fraction form
    65,912.55/90,964.92 = 37,237.48/x
  3. Step 3: Cross multiply
    65,912.55x = 90,964.92 × 37,237.48
  4. Step 4: Simplify right side
    65,912.55x = 3,387,304,044.75
  5. Step 5: Solve for x
    x = 3,387,304,044.75/65,912.55
  6. Step 6: Final answer
    x = 51,390.88

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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.