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Finding the Fourth Proportional to 81,392.61, 122,072.43 and 22,223.34

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Solution

The fourth proportional to 81,392.61, 122,072.43 and 22,223.34 is: 33,330.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392.61 : 122,072.43 = 22,223.34 : x
  2. Step 2: Convert to fraction form
    81,392.61/122,072.43 = 22,223.34/x
  3. Step 3: Cross multiply
    81,392.61x = 122,072.43 × 22,223.34
  4. Step 4: Simplify right side
    81,392.61x = 2,712,857,116.52
  5. Step 5: Solve for x
    x = 2,712,857,116.52/81,392.61
  6. Step 6: Final answer
    x = 33,330.51

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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.