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Finding the Fourth Proportional to 81,109.41, 121,654.53 and 24,949.41

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Solution

The fourth proportional to 81,109.41, 121,654.53 and 24,949.41 is: 37,421.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,109.41 : 121,654.53 = 24,949.41 : x
  2. Step 2: Convert to fraction form
    81,109.41/121,654.53 = 24,949.41/x
  3. Step 3: Cross multiply
    81,109.41x = 121,654.53 × 24,949.41
  4. Step 4: Simplify right side
    81,109.41x = 3,035,208,747.33
  5. Step 5: Solve for x
    x = 3,035,208,747.33/81,109.41
  6. Step 6: Final answer
    x = 37,421.17

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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.