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Finding the Fourth Proportional to 79,996, 119,999.92 and 30,748

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Solution

The fourth proportional to 79,996, 119,999.92 and 30,748 is: 46,124.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,996 : 119,999.92 = 30,748 : x
  2. Step 2: Convert to fraction form
    79,996/119,999.92 = 30,748/x
  3. Step 3: Cross multiply
    79,996x = 119,999.92 × 30,748
  4. Step 4: Simplify right side
    79,996x = 3,689,757,540.16
  5. Step 5: Solve for x
    x = 3,689,757,540.16/79,996
  6. Step 6: Final answer
    x = 46,124.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.