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Finding the Fourth Proportional to 68,768.88, 103,131.73 and 26,646.04

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Solution

The fourth proportional to 68,768.88, 103,131.73 and 26,646.04 is: 39,960.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,768.88 : 103,131.73 = 26,646.04 : x
  2. Step 2: Convert to fraction form
    68,768.88/103,131.73 = 26,646.04/x
  3. Step 3: Cross multiply
    68,768.88x = 103,131.73 × 26,646.04
  4. Step 4: Simplify right side
    68,768.88x = 2,748,052,202.85
  5. Step 5: Solve for x
    x = 2,748,052,202.85/68,768.88
  6. Step 6: Final answer
    x = 39,960.69

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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.