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Finding the Fourth Proportional to 79,781.57, 119,693.07 and 29,865.59

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Solution

The fourth proportional to 79,781.57, 119,693.07 and 29,865.59 is: 44,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781.57 : 119,693.07 = 29,865.59 : x
  2. Step 2: Convert to fraction form
    79,781.57/119,693.07 = 29,865.59/x
  3. Step 3: Cross multiply
    79,781.57x = 119,693.07 × 29,865.59
  4. Step 4: Simplify right side
    79,781.57x = 3,574,703,556.00
  5. Step 5: Solve for x
    x = 3,574,703,556.00/79,781.57
  6. Step 6: Final answer
    x = 44,806.13

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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.