Home / 71,825.82-99,121.23-39,997.68

Finding the Fourth Proportional to 71,825.82, 99,121.23 and 39,997.68

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Solution

The fourth proportional to 71,825.82, 99,121.23 and 39,997.68 is: 55,197.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,825.82 : 99,121.23 = 39,997.68 : x
  2. Step 2: Convert to fraction form
    71,825.82/99,121.23 = 39,997.68/x
  3. Step 3: Cross multiply
    71,825.82x = 99,121.23 × 39,997.68
  4. Step 4: Simplify right side
    71,825.82x = 3,964,619,238.75
  5. Step 5: Solve for x
    x = 3,964,619,238.75/71,825.82
  6. Step 6: Final answer
    x = 55,197.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.