Home / 40,217.89-55,439.29-31,704.79

Finding the Fourth Proportional to 40,217.89, 55,439.29 and 31,704.79

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Solution

The fourth proportional to 40,217.89, 55,439.29 and 31,704.79 is: 43,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,217.89 : 55,439.29 = 31,704.79 : x
  2. Step 2: Convert to fraction form
    40,217.89/55,439.29 = 31,704.79/x
  3. Step 3: Cross multiply
    40,217.89x = 55,439.29 × 31,704.79
  4. Step 4: Simplify right side
    40,217.89x = 1,757,691,047.20
  5. Step 5: Solve for x
    x = 1,757,691,047.20/40,217.89
  6. Step 6: Final answer
    x = 43,704.21

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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.