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Finding the Fourth Proportional to 79,121.16, 118,672.89 and 19,956.84

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Solution

The fourth proportional to 79,121.16, 118,672.89 and 19,956.84 is: 29,933.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.16 : 118,672.89 = 19,956.84 : x
  2. Step 2: Convert to fraction form
    79,121.16/118,672.89 = 19,956.84/x
  3. Step 3: Cross multiply
    79,121.16x = 118,672.89 × 19,956.84
  4. Step 4: Simplify right side
    79,121.16x = 2,368,335,878.07
  5. Step 5: Solve for x
    x = 2,368,335,878.07/79,121.16
  6. Step 6: Final answer
    x = 29,933.03

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1.5x scale

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.