Home / 78,231.78-107,833.82-61,208.73

Finding the Fourth Proportional to 78,231.78, 107,833.82 and 61,208.73

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Solution

The fourth proportional to 78,231.78, 107,833.82 and 61,208.73 is: 84,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,231.78 : 107,833.82 = 61,208.73 : x
  2. Step 2: Convert to fraction form
    78,231.78/107,833.82 = 61,208.73/x
  3. Step 3: Cross multiply
    78,231.78x = 107,833.82 × 61,208.73
  4. Step 4: Simplify right side
    78,231.78x = 6,600,370,867.20
  5. Step 5: Solve for x
    x = 6,600,370,867.20/78,231.78
  6. Step 6: Final answer
    x = 84,369.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.