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Finding the Fourth Proportional to 79,983.98, 119,901.80 and 30,097.13

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Solution

The fourth proportional to 79,983.98, 119,901.80 and 30,097.13 is: 45,117.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,983.98 : 119,901.80 = 30,097.13 : x
  2. Step 2: Convert to fraction form
    79,983.98/119,901.80 = 30,097.13/x
  3. Step 3: Cross multiply
    79,983.98x = 119,901.80 × 30,097.13
  4. Step 4: Simplify right side
    79,983.98x = 3,608,700,436.83
  5. Step 5: Solve for x
    x = 3,608,700,436.83/79,983.98
  6. Step 6: Final answer
    x = 45,117.79

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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.