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Finding the Fourth Proportional to 40,679.44, 61,012.89 and 11,099.68

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Solution

The fourth proportional to 40,679.44, 61,012.89 and 11,099.68 is: 16,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,679.44 : 61,012.89 = 11,099.68 : x
  2. Step 2: Convert to fraction form
    40,679.44/61,012.89 = 11,099.68/x
  3. Step 3: Cross multiply
    40,679.44x = 61,012.89 × 11,099.68
  4. Step 4: Simplify right side
    40,679.44x = 677,223,554.88
  5. Step 5: Solve for x
    x = 677,223,554.88/40,679.44
  6. Step 6: Final answer
    x = 16,647.81

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1.5x scale

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.