Home / 79,231.35-109,340.11-43,420.58

Finding the Fourth Proportional to 79,231.35, 109,340.11 and 43,420.58

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Solution

The fourth proportional to 79,231.35, 109,340.11 and 43,420.58 is: 59,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231.35 : 109,340.11 = 43,420.58 : x
  2. Step 2: Convert to fraction form
    79,231.35/109,340.11 = 43,420.58/x
  3. Step 3: Cross multiply
    79,231.35x = 109,340.11 × 43,420.58
  4. Step 4: Simplify right side
    79,231.35x = 4,747,610,993.46
  5. Step 5: Solve for x
    x = 4,747,610,993.46/79,231.35
  6. Step 6: Final answer
    x = 59,920.86

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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.