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Finding the Fourth Proportional to 81,807.74, 122,714.32 and 22,638.44

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Solution

The fourth proportional to 81,807.74, 122,714.32 and 22,638.44 is: 33,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,807.74 : 122,714.32 = 22,638.44 : x
  2. Step 2: Convert to fraction form
    81,807.74/122,714.32 = 22,638.44/x
  3. Step 3: Cross multiply
    81,807.74x = 122,714.32 × 22,638.44
  4. Step 4: Simplify right side
    81,807.74x = 2,778,060,770.46
  5. Step 5: Solve for x
    x = 2,778,060,770.46/81,807.74
  6. Step 6: Final answer
    x = 33,958.41

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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.