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Finding the Fourth Proportional to 81,999.40, 123,027.90 and 35,266.60

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Solution

The fourth proportional to 81,999.40, 123,027.90 and 35,266.60 is: 52,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,999.40 : 123,027.90 = 35,266.60 : x
  2. Step 2: Convert to fraction form
    81,999.40/123,027.90 = 35,266.60/x
  3. Step 3: Cross multiply
    81,999.40x = 123,027.90 × 35,266.60
  4. Step 4: Simplify right side
    81,999.40x = 4,338,775,738.14
  5. Step 5: Solve for x
    x = 4,338,775,738.14/81,999.40
  6. Step 6: Final answer
    x = 52,912.29

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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.