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Finding the Fourth Proportional to 281,956.60, 422,933.89 and 68,722.08

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Solution

The fourth proportional to 281,956.60, 422,933.89 and 68,722.08 is: 103,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,956.60 : 422,933.89 = 68,722.08 : x
  2. Step 2: Convert to fraction form
    281,956.60/422,933.89 = 68,722.08/x
  3. Step 3: Cross multiply
    281,956.60x = 422,933.89 × 68,722.08
  4. Step 4: Simplify right side
    281,956.60x = 29,064,896,623.29
  5. Step 5: Solve for x
    x = 29,064,896,623.29/281,956.60
  6. Step 6: Final answer
    x = 103,082.87

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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.