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Finding the Fourth Proportional to 89,672.87, 123,743.63 and 49,379.02

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Solution

The fourth proportional to 89,672.87, 123,743.63 and 49,379.02 is: 68,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,672.87 : 123,743.63 = 49,379.02 : x
  2. Step 2: Convert to fraction form
    89,672.87/123,743.63 = 49,379.02/x
  3. Step 3: Cross multiply
    89,672.87x = 123,743.63 × 49,379.02
  4. Step 4: Simplify right side
    89,672.87x = 6,110,338,994.73
  5. Step 5: Solve for x
    x = 6,110,338,994.73/89,672.87
  6. Step 6: Final answer
    x = 68,140.33

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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.