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Finding the Fourth Proportional to 81,395.66, 122,092.38 and 49,382.39

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Solution

The fourth proportional to 81,395.66, 122,092.38 and 49,382.39 is: 74,072.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.66 : 122,092.38 = 49,382.39 : x
  2. Step 2: Convert to fraction form
    81,395.66/122,092.38 = 49,382.39/x
  3. Step 3: Cross multiply
    81,395.66x = 122,092.38 × 49,382.39
  4. Step 4: Simplify right side
    81,395.66x = 6,029,213,525.19
  5. Step 5: Solve for x
    x = 6,029,213,525.19/81,395.66
  6. Step 6: Final answer
    x = 74,072.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.