Home / 57,178.72-85,863.20-38,578.56

Finding the Fourth Proportional to 57,178.72, 85,863.20 and 38,578.56

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Solution

The fourth proportional to 57,178.72, 85,863.20 and 38,578.56 is: 57,932.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,178.72 : 85,863.20 = 38,578.56 : x
  2. Step 2: Convert to fraction form
    57,178.72/85,863.20 = 38,578.56/x
  3. Step 3: Cross multiply
    57,178.72x = 85,863.20 × 38,578.56
  4. Step 4: Simplify right side
    57,178.72x = 3,312,478,612.99
  5. Step 5: Solve for x
    x = 3,312,478,612.99/57,178.72
  6. Step 6: Final answer
    x = 57,932.02

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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.