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Finding the Fourth Proportional to 40,170.60, 60,231.60 and 17,979.84

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Solution

The fourth proportional to 40,170.60, 60,231.60 and 17,979.84 is: 26,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,170.60 : 60,231.60 = 17,979.84 : x
  2. Step 2: Convert to fraction form
    40,170.60/60,231.60 = 17,979.84/x
  3. Step 3: Cross multiply
    40,170.60x = 60,231.60 × 17,979.84
  4. Step 4: Simplify right side
    40,170.60x = 1,082,954,530.94
  5. Step 5: Solve for x
    x = 1,082,954,530.94/40,170.60
  6. Step 6: Final answer
    x = 26,958.88

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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.