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Finding the Fourth Proportional to 68,854.52, 94,987.68 and 40,546.64

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Solution

The fourth proportional to 68,854.52, 94,987.68 and 40,546.64 is: 55,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,854.52 : 94,987.68 = 40,546.64 : x
  2. Step 2: Convert to fraction form
    68,854.52/94,987.68 = 40,546.64/x
  3. Step 3: Cross multiply
    68,854.52x = 94,987.68 × 40,546.64
  4. Step 4: Simplify right side
    68,854.52x = 3,851,431,265.40
  5. Step 5: Solve for x
    x = 3,851,431,265.40/68,854.52
  6. Step 6: Final answer
    x = 55,935.78

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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.