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Finding the Fourth Proportional to 68,857.76, 103,291.34 and 22,107.80

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Solution

The fourth proportional to 68,857.76, 103,291.34 and 22,107.80 is: 33,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,857.76 : 103,291.34 = 22,107.80 : x
  2. Step 2: Convert to fraction form
    68,857.76/103,291.34 = 22,107.80/x
  3. Step 3: Cross multiply
    68,857.76x = 103,291.34 × 22,107.80
  4. Step 4: Simplify right side
    68,857.76x = 2,283,544,286.45
  5. Step 5: Solve for x
    x = 2,283,544,286.45/68,857.76
  6. Step 6: Final answer
    x = 33,163.21

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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.