Home / 79,121.86-109,189.44-43,311.25

Finding the Fourth Proportional to 79,121.86, 109,189.44 and 43,311.25

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Solution

The fourth proportional to 79,121.86, 109,189.44 and 43,311.25 is: 59,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.86 : 109,189.44 = 43,311.25 : x
  2. Step 2: Convert to fraction form
    79,121.86/109,189.44 = 43,311.25/x
  3. Step 3: Cross multiply
    79,121.86x = 109,189.44 × 43,311.25
  4. Step 4: Simplify right side
    79,121.86x = 4,729,130,860.23
  5. Step 5: Solve for x
    x = 4,729,130,860.23/79,121.86
  6. Step 6: Final answer
    x = 59,770.22

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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.