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Finding the Fourth Proportional to 68,827.73, 103,240.38 and 18,907.63

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Solution

The fourth proportional to 68,827.73, 103,240.38 and 18,907.63 is: 28,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,827.73 : 103,240.38 = 18,907.63 : x
  2. Step 2: Convert to fraction form
    68,827.73/103,240.38 = 18,907.63/x
  3. Step 3: Cross multiply
    68,827.73x = 103,240.38 × 18,907.63
  4. Step 4: Simplify right side
    68,827.73x = 1,952,030,906.10
  5. Step 5: Solve for x
    x = 1,952,030,906.10/68,827.73
  6. Step 6: Final answer
    x = 28,361.11

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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.