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Finding the Fourth Proportional to 68,829.20, 103,218.20 and 27,267.60

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Solution

The fourth proportional to 68,829.20, 103,218.20 and 27,267.60 is: 40,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,829.20 : 103,218.20 = 27,267.60 : x
  2. Step 2: Convert to fraction form
    68,829.20/103,218.20 = 27,267.60/x
  3. Step 3: Cross multiply
    68,829.20x = 103,218.20 × 27,267.60
  4. Step 4: Simplify right side
    68,829.20x = 2,814,512,590.32
  5. Step 5: Solve for x
    x = 2,814,512,590.32/68,829.20
  6. Step 6: Final answer
    x = 40,891.26

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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.