Home / 80,997.12-111,781.26-45,192.60

Finding the Fourth Proportional to 80,997.12, 111,781.26 and 45,192.60

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Solution

The fourth proportional to 80,997.12, 111,781.26 and 45,192.60 is: 62,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.12 : 111,781.26 = 45,192.60 : x
  2. Step 2: Convert to fraction form
    80,997.12/111,781.26 = 45,192.60/x
  3. Step 3: Cross multiply
    80,997.12x = 111,781.26 × 45,192.60
  4. Step 4: Simplify right side
    80,997.12x = 5,051,685,770.68
  5. Step 5: Solve for x
    x = 5,051,685,770.68/80,997.12
  6. Step 6: Final answer
    x = 62,368.71

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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.