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Finding the Fourth Proportional to 68,168.72, 102,273.96 and 34,912.12

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Solution

The fourth proportional to 68,168.72, 102,273.96 and 34,912.12 is: 52,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,168.72 : 102,273.96 = 34,912.12 : x
  2. Step 2: Convert to fraction form
    68,168.72/102,273.96 = 34,912.12/x
  3. Step 3: Cross multiply
    68,168.72x = 102,273.96 × 34,912.12
  4. Step 4: Simplify right side
    68,168.72x = 3,570,600,764.40
  5. Step 5: Solve for x
    x = 3,570,600,764.40/68,168.72
  6. Step 6: Final answer
    x = 52,378.87

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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.