Home / 79,122.75-109,189.38-43,312.78

Finding the Fourth Proportional to 79,122.75, 109,189.38 and 43,312.78

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Solution

The fourth proportional to 79,122.75, 109,189.38 and 43,312.78 is: 59,771.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,122.75 : 109,189.38 = 43,312.78 : x
  2. Step 2: Convert to fraction form
    79,122.75/109,189.38 = 43,312.78/x
  3. Step 3: Cross multiply
    79,122.75x = 109,189.38 × 43,312.78
  4. Step 4: Simplify right side
    79,122.75x = 4,729,295,594.28
  5. Step 5: Solve for x
    x = 4,729,295,594.28/79,122.75
  6. Step 6: Final answer
    x = 59,771.63

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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.