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Finding the Fourth Proportional to 81,183.54, 121,786.79 and 25,028.22

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Solution

The fourth proportional to 81,183.54, 121,786.79 and 25,028.22 is: 37,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,183.54 : 121,786.79 = 25,028.22 : x
  2. Step 2: Convert to fraction form
    81,183.54/121,786.79 = 25,028.22/x
  3. Step 3: Cross multiply
    81,183.54x = 121,786.79 × 25,028.22
  4. Step 4: Simplify right side
    81,183.54x = 3,048,106,448.07
  5. Step 5: Solve for x
    x = 3,048,106,448.07/81,183.54
  6. Step 6: Final answer
    x = 37,545.87

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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.