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Finding the Fourth Proportional to 84,108.72, 126,185.76 and 27,957.90

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Solution

The fourth proportional to 84,108.72, 126,185.76 and 27,957.90 is: 41,944.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,108.72 : 126,185.76 = 27,957.90 : x
  2. Step 2: Convert to fraction form
    84,108.72/126,185.76 = 27,957.90/x
  3. Step 3: Cross multiply
    84,108.72x = 126,185.76 × 27,957.90
  4. Step 4: Simplify right side
    84,108.72x = 3,527,888,859.50
  5. Step 5: Solve for x
    x = 3,527,888,859.50/84,108.72
  6. Step 6: Final answer
    x = 41,944.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.