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Finding the Fourth Proportional to 26,899.60, 40,272.60 and 26,131.60

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Solution

The fourth proportional to 26,899.60, 40,272.60 and 26,131.60 is: 39,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,899.60 : 40,272.60 = 26,131.60 : x
  2. Step 2: Convert to fraction form
    26,899.60/40,272.60 = 26,131.60/x
  3. Step 3: Cross multiply
    26,899.60x = 40,272.60 × 26,131.60
  4. Step 4: Simplify right side
    26,899.60x = 1,052,387,474.16
  5. Step 5: Solve for x
    x = 1,052,387,474.16/26,899.60
  6. Step 6: Final answer
    x = 39,122.79

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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.