Home / 66,112.78-91,251.84-40,625.32

Finding the Fourth Proportional to 66,112.78, 91,251.84 and 40,625.32

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Solution

The fourth proportional to 66,112.78, 91,251.84 and 40,625.32 is: 56,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112.78 : 91,251.84 = 40,625.32 : x
  2. Step 2: Convert to fraction form
    66,112.78/91,251.84 = 40,625.32/x
  3. Step 3: Cross multiply
    66,112.78x = 91,251.84 × 40,625.32
  4. Step 4: Simplify right side
    66,112.78x = 3,707,135,200.59
  5. Step 5: Solve for x
    x = 3,707,135,200.59/66,112.78
  6. Step 6: Final answer
    x = 56,072.90

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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.