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Finding the Fourth Proportional to 66,424.20, 99,636.30 and 33,246.60

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Solution

The fourth proportional to 66,424.20, 99,636.30 and 33,246.60 is: 49,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,424.20 : 99,636.30 = 33,246.60 : x
  2. Step 2: Convert to fraction form
    66,424.20/99,636.30 = 33,246.60/x
  3. Step 3: Cross multiply
    66,424.20x = 99,636.30 × 33,246.60
  4. Step 4: Simplify right side
    66,424.20x = 3,312,568,211.58
  5. Step 5: Solve for x
    x = 3,312,568,211.58/66,424.20
  6. Step 6: Final answer
    x = 49,869.90

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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.