Home / 40,174.50-55,439.28-22,269.78

Finding the Fourth Proportional to 40,174.50, 55,439.28 and 22,269.78

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Solution

The fourth proportional to 40,174.50, 55,439.28 and 22,269.78 is: 30,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,174.50 : 55,439.28 = 22,269.78 : x
  2. Step 2: Convert to fraction form
    40,174.50/55,439.28 = 22,269.78/x
  3. Step 3: Cross multiply
    40,174.50x = 55,439.28 × 22,269.78
  4. Step 4: Simplify right side
    40,174.50x = 1,234,620,568.96
  5. Step 5: Solve for x
    x = 1,234,620,568.96/40,174.50
  6. Step 6: Final answer
    x = 30,731.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.