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Finding the Fourth Proportional to 68,608.48, 102,912.72 and 45,229.44

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Solution

The fourth proportional to 68,608.48, 102,912.72 and 45,229.44 is: 67,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608.48 : 102,912.72 = 45,229.44 : x
  2. Step 2: Convert to fraction form
    68,608.48/102,912.72 = 45,229.44/x
  3. Step 3: Cross multiply
    68,608.48x = 102,912.72 × 45,229.44
  4. Step 4: Simplify right side
    68,608.48x = 4,654,684,694.48
  5. Step 5: Solve for x
    x = 4,654,684,694.48/68,608.48
  6. Step 6: Final answer
    x = 67,844.16

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1.5x scale

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.