Home / 79,137.94-109,206.21-43,321.09

Finding the Fourth Proportional to 79,137.94, 109,206.21 and 43,321.09

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Solution

The fourth proportional to 79,137.94, 109,206.21 and 43,321.09 is: 59,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,137.94 : 109,206.21 = 43,321.09 : x
  2. Step 2: Convert to fraction form
    79,137.94/109,206.21 = 43,321.09/x
  3. Step 3: Cross multiply
    79,137.94x = 109,206.21 × 43,321.09
  4. Step 4: Simplify right side
    79,137.94x = 4,730,932,051.97
  5. Step 5: Solve for x
    x = 4,730,932,051.97/79,137.94
  6. Step 6: Final answer
    x = 59,780.83

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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.