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Finding the Fourth Proportional to 84,087, 126,131.04 and 21,758.04

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Solution

The fourth proportional to 84,087, 126,131.04 and 21,758.04 is: 32,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,087 : 126,131.04 = 21,758.04 : x
  2. Step 2: Convert to fraction form
    84,087/126,131.04 = 21,758.04/x
  3. Step 3: Cross multiply
    84,087x = 126,131.04 × 21,758.04
  4. Step 4: Simplify right side
    84,087x = 2,744,364,213.56
  5. Step 5: Solve for x
    x = 2,744,364,213.56/84,087
  6. Step 6: Final answer
    x = 32,637.20

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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.