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Finding the Fourth Proportional to 68,509.59, 102,694.33 and 38,864.80

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Solution

The fourth proportional to 68,509.59, 102,694.33 and 38,864.80 is: 58,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.59 : 102,694.33 = 38,864.80 : x
  2. Step 2: Convert to fraction form
    68,509.59/102,694.33 = 38,864.80/x
  3. Step 3: Cross multiply
    68,509.59x = 102,694.33 × 38,864.80
  4. Step 4: Simplify right side
    68,509.59x = 3,991,194,596.58
  5. Step 5: Solve for x
    x = 3,991,194,596.58/68,509.59
  6. Step 6: Final answer
    x = 58,257.46

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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.