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Finding the Fourth Proportional to 100,979.30, 151,456.80 and 41,808.80

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Solution

The fourth proportional to 100,979.30, 151,456.80 and 41,808.80 is: 62,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,979.30 : 151,456.80 = 41,808.80 : x
  2. Step 2: Convert to fraction form
    100,979.30/151,456.80 = 41,808.80/x
  3. Step 3: Cross multiply
    100,979.30x = 151,456.80 × 41,808.80
  4. Step 4: Simplify right side
    100,979.30x = 6,332,227,059.84
  5. Step 5: Solve for x
    x = 6,332,227,059.84/100,979.30
  6. Step 6: Final answer
    x = 62,708.17

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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.