Home / 72,742.44-109,115.46-20,152.38

Finding the Fourth Proportional to 72,742.44, 109,115.46 and 20,152.38

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Solution

The fourth proportional to 72,742.44, 109,115.46 and 20,152.38 is: 30,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742.44 : 109,115.46 = 20,152.38 : x
  2. Step 2: Convert to fraction form
    72,742.44/109,115.46 = 20,152.38/x
  3. Step 3: Cross multiply
    72,742.44x = 109,115.46 × 20,152.38
  4. Step 4: Simplify right side
    72,742.44x = 2,198,936,213.79
  5. Step 5: Solve for x
    x = 2,198,936,213.79/72,742.44
  6. Step 6: Final answer
    x = 30,229.07

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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.