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Finding the Fourth Proportional to 79,107.86, 118,663.00 and 31,727.13

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Solution

The fourth proportional to 79,107.86, 118,663.00 and 31,727.13 is: 47,591.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,107.86 : 118,663.00 = 31,727.13 : x
  2. Step 2: Convert to fraction form
    79,107.86/118,663.00 = 31,727.13/x
  3. Step 3: Cross multiply
    79,107.86x = 118,663.00 × 31,727.13
  4. Step 4: Simplify right side
    79,107.86x = 3,764,836,347.87
  5. Step 5: Solve for x
    x = 3,764,836,347.87/79,107.86
  6. Step 6: Final answer
    x = 47,591.18

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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.