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Finding the Fourth Proportional to 40,334.40, 60,451.20 and 20,620.80

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Solution

The fourth proportional to 40,334.40, 60,451.20 and 20,620.80 is: 30,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,334.40 : 60,451.20 = 20,620.80 : x
  2. Step 2: Convert to fraction form
    40,334.40/60,451.20 = 20,620.80/x
  3. Step 3: Cross multiply
    40,334.40x = 60,451.20 × 20,620.80
  4. Step 4: Simplify right side
    40,334.40x = 1,246,552,104.96
  5. Step 5: Solve for x
    x = 1,246,552,104.96/40,334.40
  6. Step 6: Final answer
    x = 30,905.43

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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.