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Finding the Fourth Proportional to 84,712.92, 127,110.78 and 59,912.34

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Solution

The fourth proportional to 84,712.92, 127,110.78 and 59,912.34 is: 89,897.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,712.92 : 127,110.78 = 59,912.34 : x
  2. Step 2: Convert to fraction form
    84,712.92/127,110.78 = 59,912.34/x
  3. Step 3: Cross multiply
    84,712.92x = 127,110.78 × 59,912.34
  4. Step 4: Simplify right side
    84,712.92x = 7,615,504,269.03
  5. Step 5: Solve for x
    x = 7,615,504,269.03/84,712.92
  6. Step 6: Final answer
    x = 89,897.79

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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.