Home / 81,183.51-111,960.69-50,971.65

Finding the Fourth Proportional to 81,183.51, 111,960.69 and 50,971.65

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Solution

The fourth proportional to 81,183.51, 111,960.69 and 50,971.65 is: 70,295.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,183.51 : 111,960.69 = 50,971.65 : x
  2. Step 2: Convert to fraction form
    81,183.51/111,960.69 = 50,971.65/x
  3. Step 3: Cross multiply
    81,183.51x = 111,960.69 × 50,971.65
  4. Step 4: Simplify right side
    81,183.51x = 5,706,821,104.44
  5. Step 5: Solve for x
    x = 5,706,821,104.44/81,183.51
  6. Step 6: Final answer
    x = 70,295.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.