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Finding the Fourth Proportional to 68,310.87, 102,441.61 and 28,871.05

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Solution

The fourth proportional to 68,310.87, 102,441.61 and 28,871.05 is: 43,296.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,310.87 : 102,441.61 = 28,871.05 : x
  2. Step 2: Convert to fraction form
    68,310.87/102,441.61 = 28,871.05/x
  3. Step 3: Cross multiply
    68,310.87x = 102,441.61 × 28,871.05
  4. Step 4: Simplify right side
    68,310.87x = 2,957,596,844.39
  5. Step 5: Solve for x
    x = 2,957,596,844.39/68,310.87
  6. Step 6: Final answer
    x = 43,296.14

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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.