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Finding the Fourth Proportional to 89,651.76, 123,720.26 and 49,366.44

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Solution

The fourth proportional to 89,651.76, 123,720.26 and 49,366.44 is: 68,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,651.76 : 123,720.26 = 49,366.44 : x
  2. Step 2: Convert to fraction form
    89,651.76/123,720.26 = 49,366.44/x
  3. Step 3: Cross multiply
    89,651.76x = 123,720.26 × 49,366.44
  4. Step 4: Simplify right side
    89,651.76x = 6,107,628,545.24
  5. Step 5: Solve for x
    x = 6,107,628,545.24/89,651.76
  6. Step 6: Final answer
    x = 68,126.14

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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.