Home / 80,883.36-121,325.82-21,719.03

Finding the Fourth Proportional to 80,883.36, 121,325.82 and 21,719.03

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Solution

The fourth proportional to 80,883.36, 121,325.82 and 21,719.03 is: 32,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.36 : 121,325.82 = 21,719.03 : x
  2. Step 2: Convert to fraction form
    80,883.36/121,325.82 = 21,719.03/x
  3. Step 3: Cross multiply
    80,883.36x = 121,325.82 × 21,719.03
  4. Step 4: Simplify right side
    80,883.36x = 2,635,079,015.76
  5. Step 5: Solve for x
    x = 2,635,079,015.76/80,883.36
  6. Step 6: Final answer
    x = 32,578.75

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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.