Home / 45,422.88-68,142.54-18,768.90

Finding the Fourth Proportional to 45,422.88, 68,142.54 and 18,768.90

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Solution

The fourth proportional to 45,422.88, 68,142.54 and 18,768.90 is: 28,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,422.88 : 68,142.54 = 18,768.90 : x
  2. Step 2: Convert to fraction form
    45,422.88/68,142.54 = 18,768.90/x
  3. Step 3: Cross multiply
    45,422.88x = 68,142.54 × 18,768.90
  4. Step 4: Simplify right side
    45,422.88x = 1,278,960,519.01
  5. Step 5: Solve for x
    x = 1,278,960,519.01/45,422.88
  6. Step 6: Final answer
    x = 28,156.75

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1.5x scale

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.