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Finding the Fourth Proportional to 89,740.71, 123,843 and 49,455.92

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Solution

The fourth proportional to 89,740.71, 123,843 and 49,455.92 is: 68,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,740.71 : 123,843 = 49,455.92 : x
  2. Step 2: Convert to fraction form
    89,740.71/123,843 = 49,455.92/x
  3. Step 3: Cross multiply
    89,740.71x = 123,843 × 49,455.92
  4. Step 4: Simplify right side
    89,740.71x = 6,124,768,881.35
  5. Step 5: Solve for x
    x = 6,124,768,881.35/89,740.71
  6. Step 6: Final answer
    x = 68,249.61

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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.