Home / 86,610.75-129,919.91-27,450.78

Finding the Fourth Proportional to 86,610.75, 129,919.91 and 27,450.78

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Solution

The fourth proportional to 86,610.75, 129,919.91 and 27,450.78 is: 41,177.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.75 : 129,919.91 = 27,450.78 : x
  2. Step 2: Convert to fraction form
    86,610.75/129,919.91 = 27,450.78/x
  3. Step 3: Cross multiply
    86,610.75x = 129,919.91 × 27,450.78
  4. Step 4: Simplify right side
    86,610.75x = 3,566,402,729.78
  5. Step 5: Solve for x
    x = 3,566,402,729.78/86,610.75
  6. Step 6: Final answer
    x = 41,177.37

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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.