Home / 67,086.09-100,629.36-20,338.96

Finding the Fourth Proportional to 67,086.09, 100,629.36 and 20,338.96

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Solution

The fourth proportional to 67,086.09, 100,629.36 and 20,338.96 is: 30,508.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,086.09 : 100,629.36 = 20,338.96 : x
  2. Step 2: Convert to fraction form
    67,086.09/100,629.36 = 20,338.96/x
  3. Step 3: Cross multiply
    67,086.09x = 100,629.36 × 20,338.96
  4. Step 4: Simplify right side
    67,086.09x = 2,046,696,527.87
  5. Step 5: Solve for x
    x = 2,046,696,527.87/67,086.09
  6. Step 6: Final answer
    x = 30,508.51

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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.