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Finding the Fourth Proportional to 68,375.72, 102,563.58 and 54,612.20

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Solution

The fourth proportional to 68,375.72, 102,563.58 and 54,612.20 is: 81,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,375.72 : 102,563.58 = 54,612.20 : x
  2. Step 2: Convert to fraction form
    68,375.72/102,563.58 = 54,612.20/x
  3. Step 3: Cross multiply
    68,375.72x = 102,563.58 × 54,612.20
  4. Step 4: Simplify right side
    68,375.72x = 5,601,222,743.68
  5. Step 5: Solve for x
    x = 5,601,222,743.68/68,375.72
  6. Step 6: Final answer
    x = 81,918.30

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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.