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Finding the Fourth Proportional to 68,185.92, 102,291.84 and 21,426.24

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Solution

The fourth proportional to 68,185.92, 102,291.84 and 21,426.24 is: 32,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,185.92 : 102,291.84 = 21,426.24 : x
  2. Step 2: Convert to fraction form
    68,185.92/102,291.84 = 21,426.24/x
  3. Step 3: Cross multiply
    68,185.92x = 102,291.84 × 21,426.24
  4. Step 4: Simplify right side
    68,185.92x = 2,191,729,513.88
  5. Step 5: Solve for x
    x = 2,191,729,513.88/68,185.92
  6. Step 6: Final answer
    x = 32,143.43

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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.