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Finding the Fourth Proportional to 36,081, 54,122.31 and 12,388.50

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Solution

The fourth proportional to 36,081, 54,122.31 and 12,388.50 is: 18,583.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,081 : 54,122.31 = 12,388.50 : x
  2. Step 2: Convert to fraction form
    36,081/54,122.31 = 12,388.50/x
  3. Step 3: Cross multiply
    36,081x = 54,122.31 × 12,388.50
  4. Step 4: Simplify right side
    36,081x = 670,494,237.44
  5. Step 5: Solve for x
    x = 670,494,237.44/36,081
  6. Step 6: Final answer
    x = 18,583.03

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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.