Home / 80,021.70-110,395.26-48,172.15

Finding the Fourth Proportional to 80,021.70, 110,395.26 and 48,172.15

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Solution

The fourth proportional to 80,021.70, 110,395.26 and 48,172.15 is: 66,456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,021.70 : 110,395.26 = 48,172.15 : x
  2. Step 2: Convert to fraction form
    80,021.70/110,395.26 = 48,172.15/x
  3. Step 3: Cross multiply
    80,021.70x = 110,395.26 × 48,172.15
  4. Step 4: Simplify right side
    80,021.70x = 5,317,976,716.03
  5. Step 5: Solve for x
    x = 5,317,976,716.03/80,021.70
  6. Step 6: Final answer
    x = 66,456.68

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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.