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Finding the Fourth Proportional to 79,329.85, 109,474.37 and 43,520.20

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Solution

The fourth proportional to 79,329.85, 109,474.37 and 43,520.20 is: 60,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,329.85 : 109,474.37 = 43,520.20 : x
  2. Step 2: Convert to fraction form
    79,329.85/109,474.37 = 43,520.20/x
  3. Step 3: Cross multiply
    79,329.85x = 109,474.37 × 43,520.20
  4. Step 4: Simplify right side
    79,329.85x = 4,764,346,259.67
  5. Step 5: Solve for x
    x = 4,764,346,259.67/79,329.85
  6. Step 6: Final answer
    x = 60,057.42

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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.