Home / 76,916.96-115,369.97-20,760.26

Finding the Fourth Proportional to 76,916.96, 115,369.97 and 20,760.26

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Solution

The fourth proportional to 76,916.96, 115,369.97 and 20,760.26 is: 31,138.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,916.96 : 115,369.97 = 20,760.26 : x
  2. Step 2: Convert to fraction form
    76,916.96/115,369.97 = 20,760.26/x
  3. Step 3: Cross multiply
    76,916.96x = 115,369.97 × 20,760.26
  4. Step 4: Simplify right side
    76,916.96x = 2,395,110,913.72
  5. Step 5: Solve for x
    x = 2,395,110,913.72/76,916.96
  6. Step 6: Final answer
    x = 31,138.92

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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.