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Finding the Fourth Proportional to 68,855.83, 103,288.75 and 28,834.56

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Solution

The fourth proportional to 68,855.83, 103,288.75 and 28,834.56 is: 43,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855.83 : 103,288.75 = 28,834.56 : x
  2. Step 2: Convert to fraction form
    68,855.83/103,288.75 = 28,834.56/x
  3. Step 3: Cross multiply
    68,855.83x = 103,288.75 × 28,834.56
  4. Step 4: Simplify right side
    68,855.83x = 2,978,285,587.11
  5. Step 5: Solve for x
    x = 2,978,285,587.11/68,855.83
  6. Step 6: Final answer
    x = 43,253.94

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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.