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Finding the Fourth Proportional to 79,868.80, 119,781.60 and 23,708.80

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Solution

The fourth proportional to 79,868.80, 119,781.60 and 23,708.80 is: 35,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,868.80 : 119,781.60 = 23,708.80 : x
  2. Step 2: Convert to fraction form
    79,868.80/119,781.60 = 23,708.80/x
  3. Step 3: Cross multiply
    79,868.80x = 119,781.60 × 23,708.80
  4. Step 4: Simplify right side
    79,868.80x = 2,839,877,998.08
  5. Step 5: Solve for x
    x = 2,839,877,998.08/79,868.80
  6. Step 6: Final answer
    x = 35,556.79

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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.