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Finding the Fourth Proportional to 89,745.84, 123,855.11 and 51,517.77

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Solution

The fourth proportional to 89,745.84, 123,855.11 and 51,517.77 is: 71,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,745.84 : 123,855.11 = 51,517.77 : x
  2. Step 2: Convert to fraction form
    89,745.84/123,855.11 = 51,517.77/x
  3. Step 3: Cross multiply
    89,745.84x = 123,855.11 × 51,517.77
  4. Step 4: Simplify right side
    89,745.84x = 6,380,738,193.44
  5. Step 5: Solve for x
    x = 6,380,738,193.44/89,745.84
  6. Step 6: Final answer
    x = 71,097.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.