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Finding the Fourth Proportional to 85,744.44, 128,635.79 and 26,580.60

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Solution

The fourth proportional to 85,744.44, 128,635.79 and 26,580.60 is: 39,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,744.44 : 128,635.79 = 26,580.60 : x
  2. Step 2: Convert to fraction form
    85,744.44/128,635.79 = 26,580.60/x
  3. Step 3: Cross multiply
    85,744.44x = 128,635.79 × 26,580.60
  4. Step 4: Simplify right side
    85,744.44x = 3,419,216,346.77
  5. Step 5: Solve for x
    x = 3,419,216,346.77/85,744.44
  6. Step 6: Final answer
    x = 39,876.83

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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.