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Finding the Fourth Proportional to 70,177.56, 96,922.44 and 65,781.68

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Solution

The fourth proportional to 70,177.56, 96,922.44 and 65,781.68 is: 90,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,177.56 : 96,922.44 = 65,781.68 : x
  2. Step 2: Convert to fraction form
    70,177.56/96,922.44 = 65,781.68/x
  3. Step 3: Cross multiply
    70,177.56x = 96,922.44 × 65,781.68
  4. Step 4: Simplify right side
    70,177.56x = 6,375,720,932.90
  5. Step 5: Solve for x
    x = 6,375,720,932.90/70,177.56
  6. Step 6: Final answer
    x = 90,851.28

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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.