Home / 79,515.20-109,731.58-43,705.80

Finding the Fourth Proportional to 79,515.20, 109,731.58 and 43,705.80

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Solution

The fourth proportional to 79,515.20, 109,731.58 and 43,705.80 is: 60,314.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.20 : 109,731.58 = 43,705.80 : x
  2. Step 2: Convert to fraction form
    79,515.20/109,731.58 = 43,705.80/x
  3. Step 3: Cross multiply
    79,515.20x = 109,731.58 × 43,705.80
  4. Step 4: Simplify right side
    79,515.20x = 4,795,906,379.90
  5. Step 5: Solve for x
    x = 4,795,906,379.90/79,515.20
  6. Step 6: Final answer
    x = 60,314.33

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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.