Home / 79,581.21-109,821.20-43,771.72

Finding the Fourth Proportional to 79,581.21, 109,821.20 and 43,771.72

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Solution

The fourth proportional to 79,581.21, 109,821.20 and 43,771.72 is: 60,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,581.21 : 109,821.20 = 43,771.72 : x
  2. Step 2: Convert to fraction form
    79,581.21/109,821.20 = 43,771.72/x
  3. Step 3: Cross multiply
    79,581.21x = 109,821.20 × 43,771.72
  4. Step 4: Simplify right side
    79,581.21x = 4,807,062,816.46
  5. Step 5: Solve for x
    x = 4,807,062,816.46/79,581.21
  6. Step 6: Final answer
    x = 60,404.50

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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.