Home / 84,081.19-126,121.78-57,705.97

Finding the Fourth Proportional to 84,081.19, 126,121.78 and 57,705.97

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Solution

The fourth proportional to 84,081.19, 126,121.78 and 57,705.97 is: 86,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,081.19 : 126,121.78 = 57,705.97 : x
  2. Step 2: Convert to fraction form
    84,081.19/126,121.78 = 57,705.97/x
  3. Step 3: Cross multiply
    84,081.19x = 126,121.78 × 57,705.97
  4. Step 4: Simplify right side
    84,081.19x = 7,277,979,808.63
  5. Step 5: Solve for x
    x = 7,277,979,808.63/84,081.19
  6. Step 6: Final answer
    x = 86,558.95

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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.