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Finding the Fourth Proportional to 40,343.20, 60,471.60 and 18,152.80

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Solution

The fourth proportional to 40,343.20, 60,471.60 and 18,152.80 is: 27,209.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,343.20 : 60,471.60 = 18,152.80 : x
  2. Step 2: Convert to fraction form
    40,343.20/60,471.60 = 18,152.80/x
  3. Step 3: Cross multiply
    40,343.20x = 60,471.60 × 18,152.80
  4. Step 4: Simplify right side
    40,343.20x = 1,097,728,860.48
  5. Step 5: Solve for x
    x = 1,097,728,860.48/40,343.20
  6. Step 6: Final answer
    x = 27,209.76

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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.