Home / 78,278.44-117,424.80-22,119.36

Finding the Fourth Proportional to 78,278.44, 117,424.80 and 22,119.36

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Solution

The fourth proportional to 78,278.44, 117,424.80 and 22,119.36 is: 33,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278.44 : 117,424.80 = 22,119.36 : x
  2. Step 2: Convert to fraction form
    78,278.44/117,424.80 = 22,119.36/x
  3. Step 3: Cross multiply
    78,278.44x = 117,424.80 × 22,119.36
  4. Step 4: Simplify right side
    78,278.44x = 2,597,361,424.13
  5. Step 5: Solve for x
    x = 2,597,361,424.13/78,278.44
  6. Step 6: Final answer
    x = 33,181.06

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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.