Home / 45,422.91-68,142.33-18,768.78

Finding the Fourth Proportional to 45,422.91, 68,142.33 and 18,768.78

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Solution

The fourth proportional to 45,422.91, 68,142.33 and 18,768.78 is: 28,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,422.91 : 68,142.33 = 18,768.78 : x
  2. Step 2: Convert to fraction form
    45,422.91/68,142.33 = 18,768.78/x
  3. Step 3: Cross multiply
    45,422.91x = 68,142.33 × 18,768.78
  4. Step 4: Simplify right side
    45,422.91x = 1,278,948,400.46
  5. Step 5: Solve for x
    x = 1,278,948,400.46/45,422.91
  6. Step 6: Final answer
    x = 28,156.46

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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.