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Finding the Fourth Proportional to 79,668.82, 119,577.12 and 40,253.61

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Solution

The fourth proportional to 79,668.82, 119,577.12 and 40,253.61 is: 60,417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.82 : 119,577.12 = 40,253.61 : x
  2. Step 2: Convert to fraction form
    79,668.82/119,577.12 = 40,253.61/x
  3. Step 3: Cross multiply
    79,668.82x = 119,577.12 × 40,253.61
  4. Step 4: Simplify right side
    79,668.82x = 4,813,410,753.40
  5. Step 5: Solve for x
    x = 4,813,410,753.40/79,668.82
  6. Step 6: Final answer
    x = 60,417.75

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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.