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Finding the Fourth Proportional to 54,125.70, 81,201.35 and 17,189.70

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Solution

The fourth proportional to 54,125.70, 81,201.35 and 17,189.70 is: 25,788.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,125.70 : 81,201.35 = 17,189.70 : x
  2. Step 2: Convert to fraction form
    54,125.70/81,201.35 = 17,189.70/x
  3. Step 3: Cross multiply
    54,125.70x = 81,201.35 × 17,189.70
  4. Step 4: Simplify right side
    54,125.70x = 1,395,826,846.10
  5. Step 5: Solve for x
    x = 1,395,826,846.10/54,125.70
  6. Step 6: Final answer
    x = 25,788.62

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1.5x scale

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.