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Finding the Fourth Proportional to 67,994.74, 101,992.10 and 21,247.62

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Solution

The fourth proportional to 67,994.74, 101,992.10 and 21,247.62 is: 31,871.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,994.74 : 101,992.10 = 21,247.62 : x
  2. Step 2: Convert to fraction form
    67,994.74/101,992.10 = 21,247.62/x
  3. Step 3: Cross multiply
    67,994.74x = 101,992.10 × 21,247.62
  4. Step 4: Simplify right side
    67,994.74x = 2,167,088,767.60
  5. Step 5: Solve for x
    x = 2,167,088,767.60/67,994.74
  6. Step 6: Final answer
    x = 31,871.42

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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.