Home / 45,334.72-67,990.16-20,360.80

Finding the Fourth Proportional to 45,334.72, 67,990.16 and 20,360.80

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Solution

The fourth proportional to 45,334.72, 67,990.16 and 20,360.80 is: 30,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,334.72 : 67,990.16 = 20,360.80 : x
  2. Step 2: Convert to fraction form
    45,334.72/67,990.16 = 20,360.80/x
  3. Step 3: Cross multiply
    45,334.72x = 67,990.16 × 20,360.80
  4. Step 4: Simplify right side
    45,334.72x = 1,384,334,049.73
  5. Step 5: Solve for x
    x = 1,384,334,049.73/45,334.72
  6. Step 6: Final answer
    x = 30,535.85

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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.