Home / 57,757.78-79,705.68-31,261.78

Finding the Fourth Proportional to 57,757.78, 79,705.68 and 31,261.78

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Solution

The fourth proportional to 57,757.78, 79,705.68 and 31,261.78 is: 43,141.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,757.78 : 79,705.68 = 31,261.78 : x
  2. Step 2: Convert to fraction form
    57,757.78/79,705.68 = 31,261.78/x
  3. Step 3: Cross multiply
    57,757.78x = 79,705.68 × 31,261.78
  4. Step 4: Simplify right side
    57,757.78x = 2,491,741,432.91
  5. Step 5: Solve for x
    x = 2,491,741,432.91/57,757.78
  6. Step 6: Final answer
    x = 43,141.23

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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.