Home / 81,544.56-122,329-28,949.64

Finding the Fourth Proportional to 81,544.56, 122,329 and 28,949.64

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Solution

The fourth proportional to 81,544.56, 122,329 and 28,949.64 is: 43,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,544.56 : 122,329 = 28,949.64 : x
  2. Step 2: Convert to fraction form
    81,544.56/122,329 = 28,949.64/x
  3. Step 3: Cross multiply
    81,544.56x = 122,329 × 28,949.64
  4. Step 4: Simplify right side
    81,544.56x = 3,541,380,511.56
  5. Step 5: Solve for x
    x = 3,541,380,511.56/81,544.56
  6. Step 6: Final answer
    x = 43,428.78

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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.