Home / 81,771.05-122,704.17-34,382.71

Finding the Fourth Proportional to 81,771.05, 122,704.17 and 34,382.71

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Solution

The fourth proportional to 81,771.05, 122,704.17 and 34,382.71 is: 51,594.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,771.05 : 122,704.17 = 34,382.71 : x
  2. Step 2: Convert to fraction form
    81,771.05/122,704.17 = 34,382.71/x
  3. Step 3: Cross multiply
    81,771.05x = 122,704.17 × 34,382.71
  4. Step 4: Simplify right side
    81,771.05x = 4,218,901,917.35
  5. Step 5: Solve for x
    x = 4,218,901,917.35/81,771.05
  6. Step 6: Final answer
    x = 51,594.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.