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Finding the Fourth Proportional to 68,833.98, 94,990.86 and 40,173.30

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Solution

The fourth proportional to 68,833.98, 94,990.86 and 40,173.30 is: 55,439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,833.98 : 94,990.86 = 40,173.30 : x
  2. Step 2: Convert to fraction form
    68,833.98/94,990.86 = 40,173.30/x
  3. Step 3: Cross multiply
    68,833.98x = 94,990.86 × 40,173.30
  4. Step 4: Simplify right side
    68,833.98x = 3,816,096,316.04
  5. Step 5: Solve for x
    x = 3,816,096,316.04/68,833.98
  6. Step 6: Final answer
    x = 55,439.14

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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.