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Finding the Fourth Proportional to 68,653.28, 102,990.46 and 29,199.80

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Solution

The fourth proportional to 68,653.28, 102,990.46 and 29,199.80 is: 43,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,653.28 : 102,990.46 = 29,199.80 : x
  2. Step 2: Convert to fraction form
    68,653.28/102,990.46 = 29,199.80/x
  3. Step 3: Cross multiply
    68,653.28x = 102,990.46 × 29,199.80
  4. Step 4: Simplify right side
    68,653.28x = 3,007,300,833.91
  5. Step 5: Solve for x
    x = 3,007,300,833.91/68,653.28
  6. Step 6: Final answer
    x = 43,804.18

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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.