Home / 81,702.50-112,801.64-54,517.37

Finding the Fourth Proportional to 81,702.50, 112,801.64 and 54,517.37

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Solution

The fourth proportional to 81,702.50, 112,801.64 and 54,517.37 is: 75,268.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,702.50 : 112,801.64 = 54,517.37 : x
  2. Step 2: Convert to fraction form
    81,702.50/112,801.64 = 54,517.37/x
  3. Step 3: Cross multiply
    81,702.50x = 112,801.64 × 54,517.37
  4. Step 4: Simplify right side
    81,702.50x = 6,149,647,907.89
  5. Step 5: Solve for x
    x = 6,149,647,907.89/81,702.50
  6. Step 6: Final answer
    x = 75,268.79

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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.