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Finding the Fourth Proportional to 81,797.58, 122,697.91 and 25,636.44

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Solution

The fourth proportional to 81,797.58, 122,697.91 and 25,636.44 is: 38,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,797.58 : 122,697.91 = 25,636.44 : x
  2. Step 2: Convert to fraction form
    81,797.58/122,697.91 = 25,636.44/x
  3. Step 3: Cross multiply
    81,797.58x = 122,697.91 × 25,636.44
  4. Step 4: Simplify right side
    81,797.58x = 3,145,537,955.80
  5. Step 5: Solve for x
    x = 3,145,537,955.80/81,797.58
  6. Step 6: Final answer
    x = 38,455.15

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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.