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Finding the Fourth Proportional to 81,398.89, 122,091.30 and 25,237.74

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Solution

The fourth proportional to 81,398.89, 122,091.30 and 25,237.74 is: 37,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,398.89 : 122,091.30 = 25,237.74 : x
  2. Step 2: Convert to fraction form
    81,398.89/122,091.30 = 25,237.74/x
  3. Step 3: Cross multiply
    81,398.89x = 122,091.30 × 25,237.74
  4. Step 4: Simplify right side
    81,398.89x = 3,081,308,943.50
  5. Step 5: Solve for x
    x = 3,081,308,943.50/81,398.89
  6. Step 6: Final answer
    x = 37,854.43

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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.