Home / 54,367.21-81,531.25-18,818.87

Finding the Fourth Proportional to 54,367.21, 81,531.25 and 18,818.87

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Solution

The fourth proportional to 54,367.21, 81,531.25 and 18,818.87 is: 28,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,367.21 : 81,531.25 = 18,818.87 : x
  2. Step 2: Convert to fraction form
    54,367.21/81,531.25 = 18,818.87/x
  3. Step 3: Cross multiply
    54,367.21x = 81,531.25 × 18,818.87
  4. Step 4: Simplify right side
    54,367.21x = 1,534,325,696.77
  5. Step 5: Solve for x
    x = 1,534,325,696.77/54,367.21
  6. Step 6: Final answer
    x = 28,221.53

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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.