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Finding the Fourth Proportional to 68,884.88, 103,142.20 and 43,788.88

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Solution

The fourth proportional to 68,884.88, 103,142.20 and 43,788.88 is: 65,565.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,884.88 : 103,142.20 = 43,788.88 : x
  2. Step 2: Convert to fraction form
    68,884.88/103,142.20 = 43,788.88/x
  3. Step 3: Cross multiply
    68,884.88x = 103,142.20 × 43,788.88
  4. Step 4: Simplify right side
    68,884.88x = 4,516,481,418.74
  5. Step 5: Solve for x
    x = 4,516,481,418.74/68,884.88
  6. Step 6: Final answer
    x = 65,565.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.