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Finding the Fourth Proportional to 40,418.20, 60,627.30 and 20,735.20

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Solution

The fourth proportional to 40,418.20, 60,627.30 and 20,735.20 is: 31,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,418.20 : 60,627.30 = 20,735.20 : x
  2. Step 2: Convert to fraction form
    40,418.20/60,627.30 = 20,735.20/x
  3. Step 3: Cross multiply
    40,418.20x = 60,627.30 × 20,735.20
  4. Step 4: Simplify right side
    40,418.20x = 1,257,119,190.96
  5. Step 5: Solve for x
    x = 1,257,119,190.96/40,418.20
  6. Step 6: Final answer
    x = 31,102.80

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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.