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Finding the Fourth Proportional to 79,489.05, 109,694.70 and 45,497.67

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Solution

The fourth proportional to 79,489.05, 109,694.70 and 45,497.67 is: 62,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,489.05 : 109,694.70 = 45,497.67 : x
  2. Step 2: Convert to fraction form
    79,489.05/109,694.70 = 45,497.67/x
  3. Step 3: Cross multiply
    79,489.05x = 109,694.70 × 45,497.67
  4. Step 4: Simplify right side
    79,489.05x = 4,990,853,261.35
  5. Step 5: Solve for x
    x = 4,990,853,261.35/79,489.05
  6. Step 6: Final answer
    x = 62,786.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.