Home / 69,981.20-104,940.21-20,049.87

Finding the Fourth Proportional to 69,981.20, 104,940.21 and 20,049.87

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Solution

The fourth proportional to 69,981.20, 104,940.21 and 20,049.87 is: 30,065.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,981.20 : 104,940.21 = 20,049.87 : x
  2. Step 2: Convert to fraction form
    69,981.20/104,940.21 = 20,049.87/x
  3. Step 3: Cross multiply
    69,981.20x = 104,940.21 × 20,049.87
  4. Step 4: Simplify right side
    69,981.20x = 2,104,037,568.27
  5. Step 5: Solve for x
    x = 2,104,037,568.27/69,981.20
  6. Step 6: Final answer
    x = 30,065.75

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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.