Home / 67,169.34-100,750.35-20,418.57

Finding the Fourth Proportional to 67,169.34, 100,750.35 and 20,418.57

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Solution

The fourth proportional to 67,169.34, 100,750.35 and 20,418.57 is: 30,626.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,169.34 : 100,750.35 = 20,418.57 : x
  2. Step 2: Convert to fraction form
    67,169.34/100,750.35 = 20,418.57/x
  3. Step 3: Cross multiply
    67,169.34x = 100,750.35 × 20,418.57
  4. Step 4: Simplify right side
    67,169.34x = 2,057,178,074.00
  5. Step 5: Solve for x
    x = 2,057,178,074.00/67,169.34
  6. Step 6: Final answer
    x = 30,626.74

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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.