Home / 87,864.18-121,249.89-50,136.54

Finding the Fourth Proportional to 87,864.18, 121,249.89 and 50,136.54

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Solution

The fourth proportional to 87,864.18, 121,249.89 and 50,136.54 is: 69,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.18 : 121,249.89 = 50,136.54 : x
  2. Step 2: Convert to fraction form
    87,864.18/121,249.89 = 50,136.54/x
  3. Step 3: Cross multiply
    87,864.18x = 121,249.89 × 50,136.54
  4. Step 4: Simplify right side
    87,864.18x = 6,079,049,959.98
  5. Step 5: Solve for x
    x = 6,079,049,959.98/87,864.18
  6. Step 6: Final answer
    x = 69,186.90

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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.