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Finding the Fourth Proportional to 91,072.37, 136,624.37 and 27,891

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Solution

The fourth proportional to 91,072.37, 136,624.37 and 27,891 is: 41,841.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,072.37 : 136,624.37 = 27,891 : x
  2. Step 2: Convert to fraction form
    91,072.37/136,624.37 = 27,891/x
  3. Step 3: Cross multiply
    91,072.37x = 136,624.37 × 27,891
  4. Step 4: Simplify right side
    91,072.37x = 3,810,590,164.22
  5. Step 5: Solve for x
    x = 3,810,590,164.22/91,072.37
  6. Step 6: Final answer
    x = 41,841.34

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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.