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Finding the Fourth Proportional to 68,589.16, 102,903.24 and 21,845.68

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Solution

The fourth proportional to 68,589.16, 102,903.24 and 21,845.68 is: 32,774.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,589.16 : 102,903.24 = 21,845.68 : x
  2. Step 2: Convert to fraction form
    68,589.16/102,903.24 = 21,845.68/x
  3. Step 3: Cross multiply
    68,589.16x = 102,903.24 × 21,845.68
  4. Step 4: Simplify right side
    68,589.16x = 2,247,991,252.00
  5. Step 5: Solve for x
    x = 2,247,991,252.00/68,589.16
  6. Step 6: Final answer
    x = 32,774.73

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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.