Home / 67,170.34-100,751.85-20,419.57

Finding the Fourth Proportional to 67,170.34, 100,751.85 and 20,419.57

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Solution

The fourth proportional to 67,170.34, 100,751.85 and 20,419.57 is: 30,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,170.34 : 100,751.85 = 20,419.57 : x
  2. Step 2: Convert to fraction form
    67,170.34/100,751.85 = 20,419.57/x
  3. Step 3: Cross multiply
    67,170.34x = 100,751.85 × 20,419.57
  4. Step 4: Simplify right side
    67,170.34x = 2,057,309,453.70
  5. Step 5: Solve for x
    x = 2,057,309,453.70/67,170.34
  6. Step 6: Final answer
    x = 30,628.24

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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.