Home / 80,918.78-121,377.96-21,754.44

Finding the Fourth Proportional to 80,918.78, 121,377.96 and 21,754.44

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Solution

The fourth proportional to 80,918.78, 121,377.96 and 21,754.44 is: 32,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,918.78 : 121,377.96 = 21,754.44 : x
  2. Step 2: Convert to fraction form
    80,918.78/121,377.96 = 21,754.44/x
  3. Step 3: Cross multiply
    80,918.78x = 121,377.96 × 21,754.44
  4. Step 4: Simplify right side
    80,918.78x = 2,640,509,548.14
  5. Step 5: Solve for x
    x = 2,640,509,548.14/80,918.78
  6. Step 6: Final answer
    x = 32,631.61

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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.