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Finding the Fourth Proportional to 80,649, 120,974.04 and 25,245

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Solution

The fourth proportional to 80,649, 120,974.04 and 25,245 is: 37,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649 : 120,974.04 = 25,245 : x
  2. Step 2: Convert to fraction form
    80,649/120,974.04 = 25,245/x
  3. Step 3: Cross multiply
    80,649x = 120,974.04 × 25,245
  4. Step 4: Simplify right side
    80,649x = 3,053,989,639.80
  5. Step 5: Solve for x
    x = 3,053,989,639.80/80,649
  6. Step 6: Final answer
    x = 37,867.67

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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.