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Finding the Fourth Proportional to 81,852.90, 122,771.03 and 25,693.44

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Solution

The fourth proportional to 81,852.90, 122,771.03 and 25,693.44 is: 38,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,852.90 : 122,771.03 = 25,693.44 : x
  2. Step 2: Convert to fraction form
    81,852.90/122,771.03 = 25,693.44/x
  3. Step 3: Cross multiply
    81,852.90x = 122,771.03 × 25,693.44
  4. Step 4: Simplify right side
    81,852.90x = 3,154,409,964.58
  5. Step 5: Solve for x
    x = 3,154,409,964.58/81,852.90
  6. Step 6: Final answer
    x = 38,537.55

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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.