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Finding the Fourth Proportional to 68,804.53, 103,205.87 and 18,884.57

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Solution

The fourth proportional to 68,804.53, 103,205.87 and 18,884.57 is: 28,326.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,804.53 : 103,205.87 = 18,884.57 : x
  2. Step 2: Convert to fraction form
    68,804.53/103,205.87 = 18,884.57/x
  3. Step 3: Cross multiply
    68,804.53x = 103,205.87 × 18,884.57
  4. Step 4: Simplify right side
    68,804.53x = 1,948,997,936.79
  5. Step 5: Solve for x
    x = 1,948,997,936.79/68,804.53
  6. Step 6: Final answer
    x = 28,326.59

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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.