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Finding the Fourth Proportional to 65,760.26, 90,726.94 and 37,445.90

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Solution

The fourth proportional to 65,760.26, 90,726.94 and 37,445.90 is: 51,662.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,760.26 : 90,726.94 = 37,445.90 : x
  2. Step 2: Convert to fraction form
    65,760.26/90,726.94 = 37,445.90/x
  3. Step 3: Cross multiply
    65,760.26x = 90,726.94 × 37,445.90
  4. Step 4: Simplify right side
    65,760.26x = 3,397,351,922.55
  5. Step 5: Solve for x
    x = 3,397,351,922.55/65,760.26
  6. Step 6: Final answer
    x = 51,662.69

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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.