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Finding the Fourth Proportional to 54,091, 81,149.46 and 17,155

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Solution

The fourth proportional to 54,091, 81,149.46 and 17,155 is: 25,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,091 : 81,149.46 = 17,155 : x
  2. Step 2: Convert to fraction form
    54,091/81,149.46 = 17,155/x
  3. Step 3: Cross multiply
    54,091x = 81,149.46 × 17,155
  4. Step 4: Simplify right side
    54,091x = 1,392,118,986.30
  5. Step 5: Solve for x
    x = 1,392,118,986.30/54,091
  6. Step 6: Final answer
    x = 25,736.61

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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.