Home / 79,120.46-109,186.86-43,310.78

Finding the Fourth Proportional to 79,120.46, 109,186.86 and 43,310.78

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Solution

The fourth proportional to 79,120.46, 109,186.86 and 43,310.78 is: 59,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,120.46 : 109,186.86 = 43,310.78 : x
  2. Step 2: Convert to fraction form
    79,120.46/109,186.86 = 43,310.78/x
  3. Step 3: Cross multiply
    79,120.46x = 109,186.86 × 43,310.78
  4. Step 4: Simplify right side
    79,120.46x = 4,728,968,072.35
  5. Step 5: Solve for x
    x = 4,728,968,072.35/79,120.46
  6. Step 6: Final answer
    x = 59,769.22

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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.