Home / 74,072.85-102,219.78-40,080.59

Finding the Fourth Proportional to 74,072.85, 102,219.78 and 40,080.59

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Solution

The fourth proportional to 74,072.85, 102,219.78 and 40,080.59 is: 55,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.85 : 102,219.78 = 40,080.59 : x
  2. Step 2: Convert to fraction form
    74,072.85/102,219.78 = 40,080.59/x
  3. Step 3: Cross multiply
    74,072.85x = 102,219.78 × 40,080.59
  4. Step 4: Simplify right side
    74,072.85x = 4,097,028,580.97
  5. Step 5: Solve for x
    x = 4,097,028,580.97/74,072.85
  6. Step 6: Final answer
    x = 55,310.80

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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.