Home / 57,278.97-85,981.31-45,508.41

Finding the Fourth Proportional to 57,278.97, 85,981.31 and 45,508.41

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Solution

The fourth proportional to 57,278.97, 85,981.31 and 45,508.41 is: 68,312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,278.97 : 85,981.31 = 45,508.41 : x
  2. Step 2: Convert to fraction form
    57,278.97/85,981.31 = 45,508.41/x
  3. Step 3: Cross multiply
    57,278.97x = 85,981.31 × 45,508.41
  4. Step 4: Simplify right side
    57,278.97x = 3,912,872,164.14
  5. Step 5: Solve for x
    x = 3,912,872,164.14/57,278.97
  6. Step 6: Final answer
    x = 68,312.54

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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.