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Finding the Fourth Proportional to 89,651.82, 123,720.44 and 49,369.33

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Solution

The fourth proportional to 89,651.82, 123,720.44 and 49,369.33 is: 68,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,651.82 : 123,720.44 = 49,369.33 : x
  2. Step 2: Convert to fraction form
    89,651.82/123,720.44 = 49,369.33/x
  3. Step 3: Cross multiply
    89,651.82x = 123,720.44 × 49,369.33
  4. Step 4: Simplify right side
    89,651.82x = 6,107,995,137.91
  5. Step 5: Solve for x
    x = 6,107,995,137.91/89,651.82
  6. Step 6: Final answer
    x = 68,130.18

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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.