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Finding the Fourth Proportional to 81,156.90, 111,996.88 and 44,363.88

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Solution

The fourth proportional to 81,156.90, 111,996.88 and 44,363.88 is: 61,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.90 : 111,996.88 = 44,363.88 : x
  2. Step 2: Convert to fraction form
    81,156.90/111,996.88 = 44,363.88/x
  3. Step 3: Cross multiply
    81,156.90x = 111,996.88 × 44,363.88
  4. Step 4: Simplify right side
    81,156.90x = 4,968,616,144.69
  5. Step 5: Solve for x
    x = 4,968,616,144.69/81,156.90
  6. Step 6: Final answer
    x = 61,222.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.