Home / 54,378.28-81,597.15-21,099.66

Finding the Fourth Proportional to 54,378.28, 81,597.15 and 21,099.66

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Solution

The fourth proportional to 54,378.28, 81,597.15 and 21,099.66 is: 31,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,378.28 : 81,597.15 = 21,099.66 : x
  2. Step 2: Convert to fraction form
    54,378.28/81,597.15 = 21,099.66/x
  3. Step 3: Cross multiply
    54,378.28x = 81,597.15 × 21,099.66
  4. Step 4: Simplify right side
    54,378.28x = 1,721,672,121.97
  5. Step 5: Solve for x
    x = 1,721,672,121.97/54,378.28
  6. Step 6: Final answer
    x = 31,661.03

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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.