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Finding the Fourth Proportional to 68,675.87, 103,080.41 and 33,162.28

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Solution

The fourth proportional to 68,675.87, 103,080.41 and 33,162.28 is: 49,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,675.87 : 103,080.41 = 33,162.28 : x
  2. Step 2: Convert to fraction form
    68,675.87/103,080.41 = 33,162.28/x
  3. Step 3: Cross multiply
    68,675.87x = 103,080.41 × 33,162.28
  4. Step 4: Simplify right side
    68,675.87x = 3,418,381,381.97
  5. Step 5: Solve for x
    x = 3,418,381,381.97/68,675.87
  6. Step 6: Final answer
    x = 49,775.58

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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.