Home / 67,182.15-100,769.56-20,431.38

Finding the Fourth Proportional to 67,182.15, 100,769.56 and 20,431.38

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Solution

The fourth proportional to 67,182.15, 100,769.56 and 20,431.38 is: 30,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,182.15 : 100,769.56 = 20,431.38 : x
  2. Step 2: Convert to fraction form
    67,182.15/100,769.56 = 20,431.38/x
  3. Step 3: Cross multiply
    67,182.15x = 100,769.56 × 20,431.38
  4. Step 4: Simplify right side
    67,182.15x = 2,058,861,172.79
  5. Step 5: Solve for x
    x = 2,058,861,172.79/67,182.15
  6. Step 6: Final answer
    x = 30,645.96

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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.