Home / 67,431.09-101,144.20-20,682.75

Finding the Fourth Proportional to 67,431.09, 101,144.20 and 20,682.75

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Solution

The fourth proportional to 67,431.09, 101,144.20 and 20,682.75 is: 31,023.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,431.09 : 101,144.20 = 20,682.75 : x
  2. Step 2: Convert to fraction form
    67,431.09/101,144.20 = 20,682.75/x
  3. Step 3: Cross multiply
    67,431.09x = 101,144.20 × 20,682.75
  4. Step 4: Simplify right side
    67,431.09x = 2,091,940,202.55
  5. Step 5: Solve for x
    x = 2,091,940,202.55/67,431.09
  6. Step 6: Final answer
    x = 31,023.38

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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.