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Finding the Fourth Proportional to 68,368, 102,600.60 and 26,815

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Solution

The fourth proportional to 68,368, 102,600.60 and 26,815 is: 40,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,368 : 102,600.60 = 26,815 : x
  2. Step 2: Convert to fraction form
    68,368/102,600.60 = 26,815/x
  3. Step 3: Cross multiply
    68,368x = 102,600.60 × 26,815
  4. Step 4: Simplify right side
    68,368x = 2,751,235,089
  5. Step 5: Solve for x
    x = 2,751,235,089/68,368
  6. Step 6: Final answer
    x = 40,241.56

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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.