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Finding the Fourth Proportional to 68,611.82, 94,672.89 and 40,322.97

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Solution

The fourth proportional to 68,611.82, 94,672.89 and 40,322.97 is: 55,638.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,611.82 : 94,672.89 = 40,322.97 : x
  2. Step 2: Convert to fraction form
    68,611.82/94,672.89 = 40,322.97/x
  3. Step 3: Cross multiply
    68,611.82x = 94,672.89 × 40,322.97
  4. Step 4: Simplify right side
    68,611.82x = 3,817,492,103.28
  5. Step 5: Solve for x
    x = 3,817,492,103.28/68,611.82
  6. Step 6: Final answer
    x = 55,638.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.