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Finding the Fourth Proportional to 81,331.48, 121,819.54 and 33,802.47

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Solution

The fourth proportional to 81,331.48, 121,819.54 and 33,802.47 is: 50,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.48 : 121,819.54 = 33,802.47 : x
  2. Step 2: Convert to fraction form
    81,331.48/121,819.54 = 33,802.47/x
  3. Step 3: Cross multiply
    81,331.48x = 121,819.54 × 33,802.47
  4. Step 4: Simplify right side
    81,331.48x = 4,117,800,568.15
  5. Step 5: Solve for x
    x = 4,117,800,568.15/81,331.48
  6. Step 6: Final answer
    x = 50,629.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.