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Finding the Fourth Proportional to 54,363.96, 81,555.26 and 16,921.31

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Solution

The fourth proportional to 54,363.96, 81,555.26 and 16,921.31 is: 25,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,363.96 : 81,555.26 = 16,921.31 : x
  2. Step 2: Convert to fraction form
    54,363.96/81,555.26 = 16,921.31/x
  3. Step 3: Cross multiply
    54,363.96x = 81,555.26 × 16,921.31
  4. Step 4: Simplify right side
    54,363.96x = 1,380,021,344.21
  5. Step 5: Solve for x
    x = 1,380,021,344.21/54,363.96
  6. Step 6: Final answer
    x = 25,384.86

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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.