Home / 45,138.03-67,713.35-18,836.75

Finding the Fourth Proportional to 45,138.03, 67,713.35 and 18,836.75

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Solution

The fourth proportional to 45,138.03, 67,713.35 and 18,836.75 is: 28,257.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.03 : 67,713.35 = 18,836.75 : x
  2. Step 2: Convert to fraction form
    45,138.03/67,713.35 = 18,836.75/x
  3. Step 3: Cross multiply
    45,138.03x = 67,713.35 × 18,836.75
  4. Step 4: Simplify right side
    45,138.03x = 1,275,499,445.61
  5. Step 5: Solve for x
    x = 1,275,499,445.61/45,138.03
  6. Step 6: Final answer
    x = 28,257.76

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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.