Home / 81,911.64-113,036.94-47,943.48

Finding the Fourth Proportional to 81,911.64, 113,036.94 and 47,943.48

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Solution

The fourth proportional to 81,911.64, 113,036.94 and 47,943.48 is: 66,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,911.64 : 113,036.94 = 47,943.48 : x
  2. Step 2: Convert to fraction form
    81,911.64/113,036.94 = 47,943.48/x
  3. Step 3: Cross multiply
    81,911.64x = 113,036.94 × 47,943.48
  4. Step 4: Simplify right side
    81,911.64x = 5,419,384,272.15
  5. Step 5: Solve for x
    x = 5,419,384,272.15/81,911.64
  6. Step 6: Final answer
    x = 66,161.34

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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.