Home / 54,403.32-81,596.34-21,138.60

Finding the Fourth Proportional to 54,403.32, 81,596.34 and 21,138.60

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Solution

The fourth proportional to 54,403.32, 81,596.34 and 21,138.60 is: 31,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,403.32 : 81,596.34 = 21,138.60 : x
  2. Step 2: Convert to fraction form
    54,403.32/81,596.34 = 21,138.60/x
  3. Step 3: Cross multiply
    54,403.32x = 81,596.34 × 21,138.60
  4. Step 4: Simplify right side
    54,403.32x = 1,724,832,392.72
  5. Step 5: Solve for x
    x = 1,724,832,392.72/54,403.32
  6. Step 6: Final answer
    x = 31,704.54

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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.