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Finding the Fourth Proportional to 40,111.20, 60,231.60 and 30,261.60

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Solution

The fourth proportional to 40,111.20, 60,231.60 and 30,261.60 is: 45,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,111.20 : 60,231.60 = 30,261.60 : x
  2. Step 2: Convert to fraction form
    40,111.20/60,231.60 = 30,261.60/x
  3. Step 3: Cross multiply
    40,111.20x = 60,231.60 × 30,261.60
  4. Step 4: Simplify right side
    40,111.20x = 1,822,704,586.56
  5. Step 5: Solve for x
    x = 1,822,704,586.56/40,111.20
  6. Step 6: Final answer
    x = 45,441.29

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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.