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Finding the Fourth Proportional to 89,740.62, 123,842.88 and 49,455.82

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Solution

The fourth proportional to 89,740.62, 123,842.88 and 49,455.82 is: 68,249.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,740.62 : 123,842.88 = 49,455.82 : x
  2. Step 2: Convert to fraction form
    89,740.62/123,842.88 = 49,455.82/x
  3. Step 3: Cross multiply
    89,740.62x = 123,842.88 × 49,455.82
  4. Step 4: Simplify right side
    89,740.62x = 6,124,751,181.56
  5. Step 5: Solve for x
    x = 6,124,751,181.56/89,740.62
  6. Step 6: Final answer
    x = 68,249.49

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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.