Home / 54,534.54-81,811.29-21,272.70

Finding the Fourth Proportional to 54,534.54, 81,811.29 and 21,272.70

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Solution

The fourth proportional to 54,534.54, 81,811.29 and 21,272.70 is: 31,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,534.54 : 81,811.29 = 21,272.70 : x
  2. Step 2: Convert to fraction form
    54,534.54/81,811.29 = 21,272.70/x
  3. Step 3: Cross multiply
    54,534.54x = 81,811.29 × 21,272.70
  4. Step 4: Simplify right side
    54,534.54x = 1,740,347,028.78
  5. Step 5: Solve for x
    x = 1,740,347,028.78/54,534.54
  6. Step 6: Final answer
    x = 31,912.75

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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.