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Finding the Fourth Proportional to 40,230.48, 60,378.90 and 20,245.62

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Solution

The fourth proportional to 40,230.48, 60,378.90 and 20,245.62 is: 30,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,230.48 : 60,378.90 = 20,245.62 : x
  2. Step 2: Convert to fraction form
    40,230.48/60,378.90 = 20,245.62/x
  3. Step 3: Cross multiply
    40,230.48x = 60,378.90 × 20,245.62
  4. Step 4: Simplify right side
    40,230.48x = 1,222,408,265.42
  5. Step 5: Solve for x
    x = 1,222,408,265.42/40,230.48
  6. Step 6: Final answer
    x = 30,385.13

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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.