Home / 81,186.42-121,791.78-25,021.86

Finding the Fourth Proportional to 81,186.42, 121,791.78 and 25,021.86

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Solution

The fourth proportional to 81,186.42, 121,791.78 and 25,021.86 is: 37,536.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.42 : 121,791.78 = 25,021.86 : x
  2. Step 2: Convert to fraction form
    81,186.42/121,791.78 = 25,021.86/x
  3. Step 3: Cross multiply
    81,186.42x = 121,791.78 × 25,021.86
  4. Step 4: Simplify right side
    81,186.42x = 3,047,456,868.31
  5. Step 5: Solve for x
    x = 3,047,456,868.31/81,186.42
  6. Step 6: Final answer
    x = 37,536.53

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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.