Home / 45,371.58-68,057.49-13,781.90

Finding the Fourth Proportional to 45,371.58, 68,057.49 and 13,781.90

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Solution

The fourth proportional to 45,371.58, 68,057.49 and 13,781.90 is: 20,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.58 : 68,057.49 = 13,781.90 : x
  2. Step 2: Convert to fraction form
    45,371.58/68,057.49 = 13,781.90/x
  3. Step 3: Cross multiply
    45,371.58x = 68,057.49 × 13,781.90
  4. Step 4: Simplify right side
    45,371.58x = 937,961,181.14
  5. Step 5: Solve for x
    x = 937,961,181.14/45,371.58
  6. Step 6: Final answer
    x = 20,672.88

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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.