Home / 80,949.90-111,705.60-45,137.79

Finding the Fourth Proportional to 80,949.90, 111,705.60 and 45,137.79

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Solution

The fourth proportional to 80,949.90, 111,705.60 and 45,137.79 is: 62,287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,949.90 : 111,705.60 = 45,137.79 : x
  2. Step 2: Convert to fraction form
    80,949.90/111,705.60 = 45,137.79/x
  3. Step 3: Cross multiply
    80,949.90x = 111,705.60 × 45,137.79
  4. Step 4: Simplify right side
    80,949.90x = 5,042,143,914.62
  5. Step 5: Solve for x
    x = 5,042,143,914.62/80,949.90
  6. Step 6: Final answer
    x = 62,287.22

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1.5x scale

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.