Home / 87,783.66-121,141.37-49,551.26

Finding the Fourth Proportional to 87,783.66, 121,141.37 and 49,551.26

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Solution

The fourth proportional to 87,783.66, 121,141.37 and 49,551.26 is: 68,380.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,783.66 : 121,141.37 = 49,551.26 : x
  2. Step 2: Convert to fraction form
    87,783.66/121,141.37 = 49,551.26/x
  3. Step 3: Cross multiply
    87,783.66x = 121,141.37 × 49,551.26
  4. Step 4: Simplify right side
    87,783.66x = 6,002,707,039.80
  5. Step 5: Solve for x
    x = 6,002,707,039.80/87,783.66
  6. Step 6: Final answer
    x = 68,380.69

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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.