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Finding the Fourth Proportional to 40,861.44, 61,290.90 and 11,281.08

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Solution

The fourth proportional to 40,861.44, 61,290.90 and 11,281.08 is: 16,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,861.44 : 61,290.90 = 11,281.08 : x
  2. Step 2: Convert to fraction form
    40,861.44/61,290.90 = 11,281.08/x
  3. Step 3: Cross multiply
    40,861.44x = 61,290.90 × 11,281.08
  4. Step 4: Simplify right side
    40,861.44x = 691,427,546.17
  5. Step 5: Solve for x
    x = 691,427,546.17/40,861.44
  6. Step 6: Final answer
    x = 16,921.27

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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.