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Finding the Fourth Proportional to 68,375.85, 102,600.59 and 33,315.51

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Solution

The fourth proportional to 68,375.85, 102,600.59 and 33,315.51 is: 49,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,375.85 : 102,600.59 = 33,315.51 : x
  2. Step 2: Convert to fraction form
    68,375.85/102,600.59 = 33,315.51/x
  3. Step 3: Cross multiply
    68,375.85x = 102,600.59 × 33,315.51
  4. Step 4: Simplify right side
    68,375.85x = 3,418,190,982.15
  5. Step 5: Solve for x
    x = 3,418,190,982.15/68,375.85
  6. Step 6: Final answer
    x = 49,991.20

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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.