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Finding the Fourth Proportional to 68,489.60, 102,753.60 and 33,430.40

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Solution

The fourth proportional to 68,489.60, 102,753.60 and 33,430.40 is: 50,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,489.60 : 102,753.60 = 33,430.40 : x
  2. Step 2: Convert to fraction form
    68,489.60/102,753.60 = 33,430.40/x
  3. Step 3: Cross multiply
    68,489.60x = 102,753.60 × 33,430.40
  4. Step 4: Simplify right side
    68,489.60x = 3,435,093,949.44
  5. Step 5: Solve for x
    x = 3,435,093,949.44/68,489.60
  6. Step 6: Final answer
    x = 50,154.97

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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.