Home / 78,279.39-117,425.43-22,119.96

Finding the Fourth Proportional to 78,279.39, 117,425.43 and 22,119.96

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Solution

The fourth proportional to 78,279.39, 117,425.43 and 22,119.96 is: 33,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279.39 : 117,425.43 = 22,119.96 : x
  2. Step 2: Convert to fraction form
    78,279.39/117,425.43 = 22,119.96/x
  3. Step 3: Cross multiply
    78,279.39x = 117,425.43 × 22,119.96
  4. Step 4: Simplify right side
    78,279.39x = 2,597,445,814.58
  5. Step 5: Solve for x
    x = 2,597,445,814.58/78,279.39
  6. Step 6: Final answer
    x = 33,181.73

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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.