Home / 79,231.45-109,336.92-43,420.81

Finding the Fourth Proportional to 79,231.45, 109,336.92 and 43,420.81

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Solution

The fourth proportional to 79,231.45, 109,336.92 and 43,420.81 is: 59,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231.45 : 109,336.92 = 43,420.81 : x
  2. Step 2: Convert to fraction form
    79,231.45/109,336.92 = 43,420.81/x
  3. Step 3: Cross multiply
    79,231.45x = 109,336.92 × 43,420.81
  4. Step 4: Simplify right side
    79,231.45x = 4,747,497,355.96
  5. Step 5: Solve for x
    x = 4,747,497,355.96/79,231.45
  6. Step 6: Final answer
    x = 59,919.36

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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.