Home / 54,213.60-81,322.56-20,936.64

Finding the Fourth Proportional to 54,213.60, 81,322.56 and 20,936.64

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Solution

The fourth proportional to 54,213.60, 81,322.56 and 20,936.64 is: 31,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,213.60 : 81,322.56 = 20,936.64 : x
  2. Step 2: Convert to fraction form
    54,213.60/81,322.56 = 20,936.64/x
  3. Step 3: Cross multiply
    54,213.60x = 81,322.56 × 20,936.64
  4. Step 4: Simplify right side
    54,213.60x = 1,702,621,162.60
  5. Step 5: Solve for x
    x = 1,702,621,162.60/54,213.60
  6. Step 6: Final answer
    x = 31,405.79

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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.