Home / 81,976.06-122,939.79-35,218

Finding the Fourth Proportional to 81,976.06, 122,939.79 and 35,218

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Solution

The fourth proportional to 81,976.06, 122,939.79 and 35,218 is: 52,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,976.06 : 122,939.79 = 35,218 : x
  2. Step 2: Convert to fraction form
    81,976.06/122,939.79 = 35,218/x
  3. Step 3: Cross multiply
    81,976.06x = 122,939.79 × 35,218
  4. Step 4: Simplify right side
    81,976.06x = 4,329,693,524.22
  5. Step 5: Solve for x
    x = 4,329,693,524.22/81,976.06
  6. Step 6: Final answer
    x = 52,816.56

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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.