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Finding the Fourth Proportional to 81,302.40, 121,975.60 and 33,901.80

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Solution

The fourth proportional to 81,302.40, 121,975.60 and 33,901.80 is: 50,861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,302.40 : 121,975.60 = 33,901.80 : x
  2. Step 2: Convert to fraction form
    81,302.40/121,975.60 = 33,901.80/x
  3. Step 3: Cross multiply
    81,302.40x = 121,975.60 × 33,901.80
  4. Step 4: Simplify right side
    81,302.40x = 4,135,192,396.08
  5. Step 5: Solve for x
    x = 4,135,192,396.08/81,302.40
  6. Step 6: Final answer
    x = 50,861.87

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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.