Home / 80,769.90-111,460.62-50,571.88

Finding the Fourth Proportional to 80,769.90, 111,460.62 and 50,571.88

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Solution

The fourth proportional to 80,769.90, 111,460.62 and 50,571.88 is: 69,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,769.90 : 111,460.62 = 50,571.88 : x
  2. Step 2: Convert to fraction form
    80,769.90/111,460.62 = 50,571.88/x
  3. Step 3: Cross multiply
    80,769.90x = 111,460.62 × 50,571.88
  4. Step 4: Simplify right side
    80,769.90x = 5,636,772,289.20
  5. Step 5: Solve for x
    x = 5,636,772,289.20/80,769.90
  6. Step 6: Final answer
    x = 69,788.03

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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.