Home / 81,261.74-111,907.31-66,983.38

Finding the Fourth Proportional to 81,261.74, 111,907.31 and 66,983.38

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Solution

The fourth proportional to 81,261.74, 111,907.31 and 66,983.38 is: 92,244.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,261.74 : 111,907.31 = 66,983.38 : x
  2. Step 2: Convert to fraction form
    81,261.74/111,907.31 = 66,983.38/x
  3. Step 3: Cross multiply
    81,261.74x = 111,907.31 × 66,983.38
  4. Step 4: Simplify right side
    81,261.74x = 7,495,929,255.82
  5. Step 5: Solve for x
    x = 7,495,929,255.82/81,261.74
  6. Step 6: Final answer
    x = 92,244.26

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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.