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Finding the Fourth Proportional to 45,414.60, 68,121.90 and 17,712.60

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Solution

The fourth proportional to 45,414.60, 68,121.90 and 17,712.60 is: 26,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,414.60 : 68,121.90 = 17,712.60 : x
  2. Step 2: Convert to fraction form
    45,414.60/68,121.90 = 17,712.60/x
  3. Step 3: Cross multiply
    45,414.60x = 68,121.90 × 17,712.60
  4. Step 4: Simplify right side
    45,414.60x = 1,206,615,965.94
  5. Step 5: Solve for x
    x = 1,206,615,965.94/45,414.60
  6. Step 6: Final answer
    x = 26,568.90

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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.