Home / 78,286.24-117,437.04-22,126.78

Finding the Fourth Proportional to 78,286.24, 117,437.04 and 22,126.78

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Solution

The fourth proportional to 78,286.24, 117,437.04 and 22,126.78 is: 33,192.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.24 : 117,437.04 = 22,126.78 : x
  2. Step 2: Convert to fraction form
    78,286.24/117,437.04 = 22,126.78/x
  3. Step 3: Cross multiply
    78,286.24x = 117,437.04 × 22,126.78
  4. Step 4: Simplify right side
    78,286.24x = 2,598,503,034.14
  5. Step 5: Solve for x
    x = 2,598,503,034.14/78,286.24
  6. Step 6: Final answer
    x = 33,192.34

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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.