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Finding the Fourth Proportional to 54,288.72, 81,424.48 and 33,221.44

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Solution

The fourth proportional to 54,288.72, 81,424.48 and 33,221.44 is: 49,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.72 : 81,424.48 = 33,221.44 : x
  2. Step 2: Convert to fraction form
    54,288.72/81,424.48 = 33,221.44/x
  3. Step 3: Cross multiply
    54,288.72x = 81,424.48 × 33,221.44
  4. Step 4: Simplify right side
    54,288.72x = 2,705,038,476.85
  5. Step 5: Solve for x
    x = 2,705,038,476.85/54,288.72
  6. Step 6: Final answer
    x = 49,826.90

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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.