Home / 87,786.19-121,144.41-49,558.11

Finding the Fourth Proportional to 87,786.19, 121,144.41 and 49,558.11

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Solution

The fourth proportional to 87,786.19, 121,144.41 and 49,558.11 is: 68,389.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,786.19 : 121,144.41 = 49,558.11 : x
  2. Step 2: Convert to fraction form
    87,786.19/121,144.41 = 49,558.11/x
  3. Step 3: Cross multiply
    87,786.19x = 121,144.41 × 49,558.11
  4. Step 4: Simplify right side
    87,786.19x = 6,003,687,996.67
  5. Step 5: Solve for x
    x = 6,003,687,996.67/87,786.19
  6. Step 6: Final answer
    x = 68,389.89

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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.