Home / 45,451.76-68,158.20-20,486.48

Finding the Fourth Proportional to 45,451.76, 68,158.20 and 20,486.48

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Solution

The fourth proportional to 45,451.76, 68,158.20 and 20,486.48 is: 30,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,451.76 : 68,158.20 = 20,486.48 : x
  2. Step 2: Convert to fraction form
    45,451.76/68,158.20 = 20,486.48/x
  3. Step 3: Cross multiply
    45,451.76x = 68,158.20 × 20,486.48
  4. Step 4: Simplify right side
    45,451.76x = 1,396,321,601.14
  5. Step 5: Solve for x
    x = 1,396,321,601.14/45,451.76
  6. Step 6: Final answer
    x = 30,720.96

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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.