Home / 79,121.42-109,187.40-43,311.44

Finding the Fourth Proportional to 79,121.42, 109,187.40 and 43,311.44

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Solution

The fourth proportional to 79,121.42, 109,187.40 and 43,311.44 is: 59,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.42 : 109,187.40 = 43,311.44 : x
  2. Step 2: Convert to fraction form
    79,121.42/109,187.40 = 43,311.44/x
  3. Step 3: Cross multiply
    79,121.42x = 109,187.40 × 43,311.44
  4. Step 4: Simplify right side
    79,121.42x = 4,729,063,523.86
  5. Step 5: Solve for x
    x = 4,729,063,523.86/79,121.42
  6. Step 6: Final answer
    x = 59,769.70

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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.