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Finding the Fourth Proportional to 81,862.74, 122,801.40 and 35,104.68

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Solution

The fourth proportional to 81,862.74, 122,801.40 and 35,104.68 is: 52,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,862.74 : 122,801.40 = 35,104.68 : x
  2. Step 2: Convert to fraction form
    81,862.74/122,801.40 = 35,104.68/x
  3. Step 3: Cross multiply
    81,862.74x = 122,801.40 × 35,104.68
  4. Step 4: Simplify right side
    81,862.74x = 4,310,903,850.55
  5. Step 5: Solve for x
    x = 4,310,903,850.55/81,862.74
  6. Step 6: Final answer
    x = 52,660.15

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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.