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Finding the Fourth Proportional to 68,309.67, 102,471.33 and 20,924.21

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Solution

The fourth proportional to 68,309.67, 102,471.33 and 20,924.21 is: 31,388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,309.67 : 102,471.33 = 20,924.21 : x
  2. Step 2: Convert to fraction form
    68,309.67/102,471.33 = 20,924.21/x
  3. Step 3: Cross multiply
    68,309.67x = 102,471.33 × 20,924.21
  4. Step 4: Simplify right side
    68,309.67x = 2,144,131,789.02
  5. Step 5: Solve for x
    x = 2,144,131,789.02/68,309.67
  6. Step 6: Final answer
    x = 31,388.41

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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.