Home / 81,743.12-122,512.08-34,940.96

Finding the Fourth Proportional to 81,743.12, 122,512.08 and 34,940.96

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Solution

The fourth proportional to 81,743.12, 122,512.08 and 34,940.96 is: 52,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,743.12 : 122,512.08 = 34,940.96 : x
  2. Step 2: Convert to fraction form
    81,743.12/122,512.08 = 34,940.96/x
  3. Step 3: Cross multiply
    81,743.12x = 122,512.08 × 34,940.96
  4. Step 4: Simplify right side
    81,743.12x = 4,280,689,686.80
  5. Step 5: Solve for x
    x = 4,280,689,686.80/81,743.12
  6. Step 6: Final answer
    x = 52,367.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.