Home / 81,220.68-121,531.44-49,218.18

Finding the Fourth Proportional to 81,220.68, 121,531.44 and 49,218.18

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Solution

The fourth proportional to 81,220.68, 121,531.44 and 49,218.18 is: 73,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,220.68 : 121,531.44 = 49,218.18 : x
  2. Step 2: Convert to fraction form
    81,220.68/121,531.44 = 49,218.18/x
  3. Step 3: Cross multiply
    81,220.68x = 121,531.44 × 49,218.18
  4. Step 4: Simplify right side
    81,220.68x = 5,981,556,289.58
  5. Step 5: Solve for x
    x = 5,981,556,289.58/81,220.68
  6. Step 6: Final answer
    x = 73,645.73

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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.