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Finding the Fourth Proportional to 68,093.10, 102,103.20 and 28,605.60

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Solution

The fourth proportional to 68,093.10, 102,103.20 and 28,605.60 is: 42,893.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,093.10 : 102,103.20 = 28,605.60 : x
  2. Step 2: Convert to fraction form
    68,093.10/102,103.20 = 28,605.60/x
  3. Step 3: Cross multiply
    68,093.10x = 102,103.20 × 28,605.60
  4. Step 4: Simplify right side
    68,093.10x = 2,920,723,297.92
  5. Step 5: Solve for x
    x = 2,920,723,297.92/68,093.10
  6. Step 6: Final answer
    x = 42,893.09

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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.