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Finding the Fourth Proportional to 40,419.48, 60,517.44 and 20,655.48

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Solution

The fourth proportional to 40,419.48, 60,517.44 and 20,655.48 is: 30,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,419.48 : 60,517.44 = 20,655.48 : x
  2. Step 2: Convert to fraction form
    40,419.48/60,517.44 = 20,655.48/x
  3. Step 3: Cross multiply
    40,419.48x = 60,517.44 × 20,655.48
  4. Step 4: Simplify right side
    40,419.48x = 1,250,016,771.57
  5. Step 5: Solve for x
    x = 1,250,016,771.57/40,419.48
  6. Step 6: Final answer
    x = 30,926.10

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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.