Home / 79,982.73-120,525.68-66,249.78

Finding the Fourth Proportional to 79,982.73, 120,525.68 and 66,249.78

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Solution

The fourth proportional to 79,982.73, 120,525.68 and 66,249.78 is: 99,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,982.73 : 120,525.68 = 66,249.78 : x
  2. Step 2: Convert to fraction form
    79,982.73/120,525.68 = 66,249.78/x
  3. Step 3: Cross multiply
    79,982.73x = 120,525.68 × 66,249.78
  4. Step 4: Simplify right side
    79,982.73x = 7,984,799,453.10
  5. Step 5: Solve for x
    x = 7,984,799,453.10/79,982.73
  6. Step 6: Final answer
    x = 99,831.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.