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Finding the Fourth Proportional to 85,550.31, 128,339.31 and 26,372.14

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Solution

The fourth proportional to 85,550.31, 128,339.31 and 26,372.14 is: 39,562.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,550.31 : 128,339.31 = 26,372.14 : x
  2. Step 2: Convert to fraction form
    85,550.31/128,339.31 = 26,372.14/x
  3. Step 3: Cross multiply
    85,550.31x = 128,339.31 × 26,372.14
  4. Step 4: Simplify right side
    85,550.31x = 3,384,582,857.09
  5. Step 5: Solve for x
    x = 3,384,582,857.09/85,550.31
  6. Step 6: Final answer
    x = 39,562.48

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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.