Home / 77,414.18-116,121.62-21,255.08

Finding the Fourth Proportional to 77,414.18, 116,121.62 and 21,255.08

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Solution

The fourth proportional to 77,414.18, 116,121.62 and 21,255.08 is: 31,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,414.18 : 116,121.62 = 21,255.08 : x
  2. Step 2: Convert to fraction form
    77,414.18/116,121.62 = 21,255.08/x
  3. Step 3: Cross multiply
    77,414.18x = 116,121.62 × 21,255.08
  4. Step 4: Simplify right side
    77,414.18x = 2,468,173,795.36
  5. Step 5: Solve for x
    x = 2,468,173,795.36/77,414.18
  6. Step 6: Final answer
    x = 31,882.71

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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.