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Finding the Fourth Proportional to 68,348.60, 102,537.72 and 20,963.84

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Solution

The fourth proportional to 68,348.60, 102,537.72 and 20,963.84 is: 31,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,348.60 : 102,537.72 = 20,963.84 : x
  2. Step 2: Convert to fraction form
    68,348.60/102,537.72 = 20,963.84/x
  3. Step 3: Cross multiply
    68,348.60x = 102,537.72 × 20,963.84
  4. Step 4: Simplify right side
    68,348.60x = 2,149,584,356.04
  5. Step 5: Solve for x
    x = 2,149,584,356.04/68,348.60
  6. Step 6: Final answer
    x = 31,450.31

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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.