Home / 80,582.27-120,873.40-27,991.80

Finding the Fourth Proportional to 80,582.27, 120,873.40 and 27,991.80

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Solution

The fourth proportional to 80,582.27, 120,873.40 and 27,991.80 is: 41,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,582.27 : 120,873.40 = 27,991.80 : x
  2. Step 2: Convert to fraction form
    80,582.27/120,873.40 = 27,991.80/x
  3. Step 3: Cross multiply
    80,582.27x = 120,873.40 × 27,991.80
  4. Step 4: Simplify right side
    80,582.27x = 3,383,463,968.14
  5. Step 5: Solve for x
    x = 3,383,463,968.14/80,582.27
  6. Step 6: Final answer
    x = 41,987.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.