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Finding the Fourth Proportional to 36,761.21, 55,052.99 and 20,918.24

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Solution

The fourth proportional to 36,761.21, 55,052.99 and 20,918.24 is: 31,326.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,761.21 : 55,052.99 = 20,918.24 : x
  2. Step 2: Convert to fraction form
    36,761.21/55,052.99 = 20,918.24/x
  3. Step 3: Cross multiply
    36,761.21x = 55,052.99 × 20,918.24
  4. Step 4: Simplify right side
    36,761.21x = 1,151,611,657.54
  5. Step 5: Solve for x
    x = 1,151,611,657.54/36,761.21
  6. Step 6: Final answer
    x = 31,326.82

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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.