Home / 42,540.43-63,805.78-11,378.11

Finding the Fourth Proportional to 42,540.43, 63,805.78 and 11,378.11

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Solution

The fourth proportional to 42,540.43, 63,805.78 and 11,378.11 is: 17,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.43 : 63,805.78 = 11,378.11 : x
  2. Step 2: Convert to fraction form
    42,540.43/63,805.78 = 11,378.11/x
  3. Step 3: Cross multiply
    42,540.43x = 63,805.78 × 11,378.11
  4. Step 4: Simplify right side
    42,540.43x = 725,989,183.48
  5. Step 5: Solve for x
    x = 725,989,183.48/42,540.43
  6. Step 6: Final answer
    x = 17,065.86

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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.