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Finding the Fourth Proportional to 66,822.06, 100,222.65 and 21,843.08

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Solution

The fourth proportional to 66,822.06, 100,222.65 and 21,843.08 is: 32,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,822.06 : 100,222.65 = 21,843.08 : x
  2. Step 2: Convert to fraction form
    66,822.06/100,222.65 = 21,843.08/x
  3. Step 3: Cross multiply
    66,822.06x = 100,222.65 × 21,843.08
  4. Step 4: Simplify right side
    66,822.06x = 2,189,171,800.24
  5. Step 5: Solve for x
    x = 2,189,171,800.24/66,822.06
  6. Step 6: Final answer
    x = 32,761.21

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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.