Home / 79,786.52-119,679.42-20,617.16

Finding the Fourth Proportional to 79,786.52, 119,679.42 and 20,617.16

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Solution

The fourth proportional to 79,786.52, 119,679.42 and 20,617.16 is: 30,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,786.52 : 119,679.42 = 20,617.16 : x
  2. Step 2: Convert to fraction form
    79,786.52/119,679.42 = 20,617.16/x
  3. Step 3: Cross multiply
    79,786.52x = 119,679.42 × 20,617.16
  4. Step 4: Simplify right side
    79,786.52x = 2,467,449,750.85
  5. Step 5: Solve for x
    x = 2,467,449,750.85/79,786.52
  6. Step 6: Final answer
    x = 30,925.65

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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.