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Finding the Fourth Proportional to 84,127.26, 126,105.72 and 54,563.88

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Solution

The fourth proportional to 84,127.26, 126,105.72 and 54,563.88 is: 81,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,127.26 : 126,105.72 = 54,563.88 : x
  2. Step 2: Convert to fraction form
    84,127.26/126,105.72 = 54,563.88/x
  3. Step 3: Cross multiply
    84,127.26x = 126,105.72 × 54,563.88
  4. Step 4: Simplify right side
    84,127.26x = 6,880,817,373.39
  5. Step 5: Solve for x
    x = 6,880,817,373.39/84,127.26
  6. Step 6: Final answer
    x = 81,790.58

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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.