Home / 81,242.10-121,850.82-27,942.18

Finding the Fourth Proportional to 81,242.10, 121,850.82 and 27,942.18

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Solution

The fourth proportional to 81,242.10, 121,850.82 and 27,942.18 is: 41,909.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.10 : 121,850.82 = 27,942.18 : x
  2. Step 2: Convert to fraction form
    81,242.10/121,850.82 = 27,942.18/x
  3. Step 3: Cross multiply
    81,242.10x = 121,850.82 × 27,942.18
  4. Step 4: Simplify right side
    81,242.10x = 3,404,777,545.59
  5. Step 5: Solve for x
    x = 3,404,777,545.59/81,242.10
  6. Step 6: Final answer
    x = 41,909.03

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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.