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Finding the Fourth Proportional to 79,661.97, 119,492.37 and 20,497.59

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Solution

The fourth proportional to 79,661.97, 119,492.37 and 20,497.59 is: 30,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.97 : 119,492.37 = 20,497.59 : x
  2. Step 2: Convert to fraction form
    79,661.97/119,492.37 = 20,497.59/x
  3. Step 3: Cross multiply
    79,661.97x = 119,492.37 × 20,497.59
  4. Step 4: Simplify right side
    79,661.97x = 2,449,305,608.39
  5. Step 5: Solve for x
    x = 2,449,305,608.39/79,661.97
  6. Step 6: Final answer
    x = 30,746.23

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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.