Home / 78,551.22-117,733.20-54,729.78

Finding the Fourth Proportional to 78,551.22, 117,733.20 and 54,729.78

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Solution

The fourth proportional to 78,551.22, 117,733.20 and 54,729.78 is: 82,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,551.22 : 117,733.20 = 54,729.78 : x
  2. Step 2: Convert to fraction form
    78,551.22/117,733.20 = 54,729.78/x
  3. Step 3: Cross multiply
    78,551.22x = 117,733.20 × 54,729.78
  4. Step 4: Simplify right side
    78,551.22x = 6,443,511,487.96
  5. Step 5: Solve for x
    x = 6,443,511,487.96/78,551.22
  6. Step 6: Final answer
    x = 82,029.43

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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.