Home / 80,936.69-111,652.92-54,085.79

Finding the Fourth Proportional to 80,936.69, 111,652.92 and 54,085.79

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Solution

The fourth proportional to 80,936.69, 111,652.92 and 54,085.79 is: 74,611.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,936.69 : 111,652.92 = 54,085.79 : x
  2. Step 2: Convert to fraction form
    80,936.69/111,652.92 = 54,085.79/x
  3. Step 3: Cross multiply
    80,936.69x = 111,652.92 × 54,085.79
  4. Step 4: Simplify right side
    80,936.69x = 6,038,836,663.14
  5. Step 5: Solve for x
    x = 6,038,836,663.14/80,936.69
  6. Step 6: Final answer
    x = 74,611.86

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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.