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Finding the Fourth Proportional to 81,852, 122,797.05 and 25,689.03

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Solution

The fourth proportional to 81,852, 122,797.05 and 25,689.03 is: 38,539.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,852 : 122,797.05 = 25,689.03 : x
  2. Step 2: Convert to fraction form
    81,852/122,797.05 = 25,689.03/x
  3. Step 3: Cross multiply
    81,852x = 122,797.05 × 25,689.03
  4. Step 4: Simplify right side
    81,852x = 3,154,537,101.36
  5. Step 5: Solve for x
    x = 3,154,537,101.36/81,852
  6. Step 6: Final answer
    x = 38,539.52

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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.