Home / 86,121.75-129,183.17-23,792.79

Finding the Fourth Proportional to 86,121.75, 129,183.17 and 23,792.79

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Solution

The fourth proportional to 86,121.75, 129,183.17 and 23,792.79 is: 35,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,121.75 : 129,183.17 = 23,792.79 : x
  2. Step 2: Convert to fraction form
    86,121.75/129,183.17 = 23,792.79/x
  3. Step 3: Cross multiply
    86,121.75x = 129,183.17 × 23,792.79
  4. Step 4: Simplify right side
    86,121.75x = 3,073,627,916.38
  5. Step 5: Solve for x
    x = 3,073,627,916.38/86,121.75
  6. Step 6: Final answer
    x = 35,689.33

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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.