Home / 77,391.18-116,086.68-21,231.90

Finding the Fourth Proportional to 77,391.18, 116,086.68 and 21,231.90

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Solution

The fourth proportional to 77,391.18, 116,086.68 and 21,231.90 is: 31,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,391.18 : 116,086.68 = 21,231.90 : x
  2. Step 2: Convert to fraction form
    77,391.18/116,086.68 = 21,231.90/x
  3. Step 3: Cross multiply
    77,391.18x = 116,086.68 × 21,231.90
  4. Step 4: Simplify right side
    77,391.18x = 2,464,740,781.09
  5. Step 5: Solve for x
    x = 2,464,740,781.09/77,391.18
  6. Step 6: Final answer
    x = 31,847.83

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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.