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Finding the Fourth Proportional to 54,661.32, 81,939.69 and 21,370.32

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Solution

The fourth proportional to 54,661.32, 81,939.69 and 21,370.32 is: 32,035.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,661.32 : 81,939.69 = 21,370.32 : x
  2. Step 2: Convert to fraction form
    54,661.32/81,939.69 = 21,370.32/x
  3. Step 3: Cross multiply
    54,661.32x = 81,939.69 × 21,370.32
  4. Step 4: Simplify right side
    54,661.32x = 1,751,077,396.00
  5. Step 5: Solve for x
    x = 1,751,077,396.00/54,661.32
  6. Step 6: Final answer
    x = 32,035.04

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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.