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Finding the Fourth Proportional to 89,497.78, 123,476.21 and 55,494.03

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Solution

The fourth proportional to 89,497.78, 123,476.21 and 55,494.03 is: 76,562.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,497.78 : 123,476.21 = 55,494.03 : x
  2. Step 2: Convert to fraction form
    89,497.78/123,476.21 = 55,494.03/x
  3. Step 3: Cross multiply
    89,497.78x = 123,476.21 × 55,494.03
  4. Step 4: Simplify right side
    89,497.78x = 6,852,192,224.56
  5. Step 5: Solve for x
    x = 6,852,192,224.56/89,497.78
  6. Step 6: Final answer
    x = 76,562.71

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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.