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Finding the Fourth Proportional to 40,994.89, 61,471.22 and 18,789.25

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Solution

The fourth proportional to 40,994.89, 61,471.22 and 18,789.25 is: 28,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,994.89 : 61,471.22 = 18,789.25 : x
  2. Step 2: Convert to fraction form
    40,994.89/61,471.22 = 18,789.25/x
  3. Step 3: Cross multiply
    40,994.89x = 61,471.22 × 18,789.25
  4. Step 4: Simplify right side
    40,994.89x = 1,154,997,813.03
  5. Step 5: Solve for x
    x = 1,154,997,813.03/40,994.89
  6. Step 6: Final answer
    x = 28,174.19

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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.