Home / 81,148.67-111,976.97-55,676.96

Finding the Fourth Proportional to 81,148.67, 111,976.97 and 55,676.96

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Solution

The fourth proportional to 81,148.67, 111,976.97 and 55,676.96 is: 76,828.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,148.67 : 111,976.97 = 55,676.96 : x
  2. Step 2: Convert to fraction form
    81,148.67/111,976.97 = 55,676.96/x
  3. Step 3: Cross multiply
    81,148.67x = 111,976.97 × 55,676.96
  4. Step 4: Simplify right side
    81,148.67x = 6,234,537,279.61
  5. Step 5: Solve for x
    x = 6,234,537,279.61/81,148.67
  6. Step 6: Final answer
    x = 76,828.58

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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.