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Finding the Fourth Proportional to 68,821.63, 103,222.73 and 22,068.43

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Solution

The fourth proportional to 68,821.63, 103,222.73 and 22,068.43 is: 33,099.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,821.63 : 103,222.73 = 22,068.43 : x
  2. Step 2: Convert to fraction form
    68,821.63/103,222.73 = 22,068.43/x
  3. Step 3: Cross multiply
    68,821.63x = 103,222.73 × 22,068.43
  4. Step 4: Simplify right side
    68,821.63x = 2,277,963,481.07
  5. Step 5: Solve for x
    x = 2,277,963,481.07/68,821.63
  6. Step 6: Final answer
    x = 33,099.53

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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.