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Finding the Fourth Proportional to 84,912.89, 127,426.62 and 34,991.88

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Solution

The fourth proportional to 84,912.89, 127,426.62 and 34,991.88 is: 52,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912.89 : 127,426.62 = 34,991.88 : x
  2. Step 2: Convert to fraction form
    84,912.89/127,426.62 = 34,991.88/x
  3. Step 3: Cross multiply
    84,912.89x = 127,426.62 × 34,991.88
  4. Step 4: Simplify right side
    84,912.89x = 4,458,897,226.93
  5. Step 5: Solve for x
    x = 4,458,897,226.93/84,912.89
  6. Step 6: Final answer
    x = 52,511.43

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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.