Home / 81,686.52-122,556.24-40,104.36

Finding the Fourth Proportional to 81,686.52, 122,556.24 and 40,104.36

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Solution

The fourth proportional to 81,686.52, 122,556.24 and 40,104.36 is: 60,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686.52 : 122,556.24 = 40,104.36 : x
  2. Step 2: Convert to fraction form
    81,686.52/122,556.24 = 40,104.36/x
  3. Step 3: Cross multiply
    81,686.52x = 122,556.24 × 40,104.36
  4. Step 4: Simplify right side
    81,686.52x = 4,915,039,569.21
  5. Step 5: Solve for x
    x = 4,915,039,569.21/81,686.52
  6. Step 6: Final answer
    x = 60,169.53

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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.