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Finding the Fourth Proportional to 68,759.48, 103,067.22 and 28,801.28

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Solution

The fourth proportional to 68,759.48, 103,067.22 and 28,801.28 is: 43,171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,759.48 : 103,067.22 = 28,801.28 : x
  2. Step 2: Convert to fraction form
    68,759.48/103,067.22 = 28,801.28/x
  3. Step 3: Cross multiply
    68,759.48x = 103,067.22 × 28,801.28
  4. Step 4: Simplify right side
    68,759.48x = 2,968,467,862.04
  5. Step 5: Solve for x
    x = 2,968,467,862.04/68,759.48
  6. Step 6: Final answer
    x = 43,171.76

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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.