Home / 87,709.33-121,036.12-49,480.57

Finding the Fourth Proportional to 87,709.33, 121,036.12 and 49,480.57

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Solution

The fourth proportional to 87,709.33, 121,036.12 and 49,480.57 is: 68,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,709.33 : 121,036.12 = 49,480.57 : x
  2. Step 2: Convert to fraction form
    87,709.33/121,036.12 = 49,480.57/x
  3. Step 3: Cross multiply
    87,709.33x = 121,036.12 × 49,480.57
  4. Step 4: Simplify right side
    87,709.33x = 5,988,936,208.19
  5. Step 5: Solve for x
    x = 5,988,936,208.19/87,709.33
  6. Step 6: Final answer
    x = 68,281.63

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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.