Home / 81,186.54-121,791.29-25,031.22

Finding the Fourth Proportional to 81,186.54, 121,791.29 and 25,031.22

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Solution

The fourth proportional to 81,186.54, 121,791.29 and 25,031.22 is: 37,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.54 : 121,791.29 = 25,031.22 : x
  2. Step 2: Convert to fraction form
    81,186.54/121,791.29 = 25,031.22/x
  3. Step 3: Cross multiply
    81,186.54x = 121,791.29 × 25,031.22
  4. Step 4: Simplify right side
    81,186.54x = 3,048,584,448.92
  5. Step 5: Solve for x
    x = 3,048,584,448.92/81,186.54
  6. Step 6: Final answer
    x = 37,550.37

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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.