Home / 85,126.64-117,435.26-54,921.66

Finding the Fourth Proportional to 85,126.64, 117,435.26 and 54,921.66

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Solution

The fourth proportional to 85,126.64, 117,435.26 and 54,921.66 is: 75,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,126.64 : 117,435.26 = 54,921.66 : x
  2. Step 2: Convert to fraction form
    85,126.64/117,435.26 = 54,921.66/x
  3. Step 3: Cross multiply
    85,126.64x = 117,435.26 × 54,921.66
  4. Step 4: Simplify right side
    85,126.64x = 6,449,739,147.12
  5. Step 5: Solve for x
    x = 6,449,739,147.12/85,126.64
  6. Step 6: Final answer
    x = 75,766.41

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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.