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Finding the Fourth Proportional to 81,049.58, 121,580.52 and 21,884.39

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Solution

The fourth proportional to 81,049.58, 121,580.52 and 21,884.39 is: 32,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.58 : 121,580.52 = 21,884.39 : x
  2. Step 2: Convert to fraction form
    81,049.58/121,580.52 = 21,884.39/x
  3. Step 3: Cross multiply
    81,049.58x = 121,580.52 × 21,884.39
  4. Step 4: Simplify right side
    81,049.58x = 2,660,715,282.04
  5. Step 5: Solve for x
    x = 2,660,715,282.04/81,049.58
  6. Step 6: Final answer
    x = 32,828.24

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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.