Home / 81,309.44-121,933.82-27,986.33

Finding the Fourth Proportional to 81,309.44, 121,933.82 and 27,986.33

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Solution

The fourth proportional to 81,309.44, 121,933.82 and 27,986.33 is: 41,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,309.44 : 121,933.82 = 27,986.33 : x
  2. Step 2: Convert to fraction form
    81,309.44/121,933.82 = 27,986.33/x
  3. Step 3: Cross multiply
    81,309.44x = 121,933.82 × 27,986.33
  4. Step 4: Simplify right side
    81,309.44x = 3,412,480,499.48
  5. Step 5: Solve for x
    x = 3,412,480,499.48/81,309.44
  6. Step 6: Final answer
    x = 41,969.06

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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.