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Finding the Fourth Proportional to 68,509.85, 102,618.77 and 32,918.85

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Solution

The fourth proportional to 68,509.85, 102,618.77 and 32,918.85 is: 49,308.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.85 : 102,618.77 = 32,918.85 : x
  2. Step 2: Convert to fraction form
    68,509.85/102,618.77 = 32,918.85/x
  3. Step 3: Cross multiply
    68,509.85x = 102,618.77 × 32,918.85
  4. Step 4: Simplify right side
    68,509.85x = 3,378,091,732.22
  5. Step 5: Solve for x
    x = 3,378,091,732.22/68,509.85
  6. Step 6: Final answer
    x = 49,308.12

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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.