Home / 87,133.59-120,243.24-49,405.41

Finding the Fourth Proportional to 87,133.59, 120,243.24 and 49,405.41

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Solution

The fourth proportional to 87,133.59, 120,243.24 and 49,405.41 is: 68,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,133.59 : 120,243.24 = 49,405.41 : x
  2. Step 2: Convert to fraction form
    87,133.59/120,243.24 = 49,405.41/x
  3. Step 3: Cross multiply
    87,133.59x = 120,243.24 × 49,405.41
  4. Step 4: Simplify right side
    87,133.59x = 5,940,666,571.93
  5. Step 5: Solve for x
    x = 5,940,666,571.93/87,133.59
  6. Step 6: Final answer
    x = 68,178.83

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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.