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Finding the Fourth Proportional to 79,589.16, 119,323.80 and 68,625

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Solution

The fourth proportional to 79,589.16, 119,323.80 and 68,625 is: 102,885.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,589.16 : 119,323.80 = 68,625 : x
  2. Step 2: Convert to fraction form
    79,589.16/119,323.80 = 68,625/x
  3. Step 3: Cross multiply
    79,589.16x = 119,323.80 × 68,625
  4. Step 4: Simplify right side
    79,589.16x = 8,188,595,775
  5. Step 5: Solve for x
    x = 8,188,595,775/79,589.16
  6. Step 6: Final answer
    x = 102,885.82

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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.