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Finding the Fourth Proportional to 36,011.40, 54,049.10 and 21,201.80

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Solution

The fourth proportional to 36,011.40, 54,049.10 and 21,201.80 is: 31,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,011.40 : 54,049.10 = 21,201.80 : x
  2. Step 2: Convert to fraction form
    36,011.40/54,049.10 = 21,201.80/x
  3. Step 3: Cross multiply
    36,011.40x = 54,049.10 × 21,201.80
  4. Step 4: Simplify right side
    36,011.40x = 1,145,938,208.38
  5. Step 5: Solve for x
    x = 1,145,938,208.38/36,011.40
  6. Step 6: Final answer
    x = 31,821.54

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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.