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Finding the Fourth Proportional to 86,049.82, 118,700.94 and 79,960.92

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Solution

The fourth proportional to 86,049.82, 118,700.94 and 79,960.92 is: 110,301.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,049.82 : 118,700.94 = 79,960.92 : x
  2. Step 2: Convert to fraction form
    86,049.82/118,700.94 = 79,960.92/x
  3. Step 3: Cross multiply
    86,049.82x = 118,700.94 × 79,960.92
  4. Step 4: Simplify right side
    86,049.82x = 9,491,436,367.26
  5. Step 5: Solve for x
    x = 9,491,436,367.26/86,049.82
  6. Step 6: Final answer
    x = 110,301.64

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1.5x scale

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.