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Finding the Fourth Proportional to 68,488, 102,732.04 and 21,740.88

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Solution

The fourth proportional to 68,488, 102,732.04 and 21,740.88 is: 32,611.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488 : 102,732.04 = 21,740.88 : x
  2. Step 2: Convert to fraction form
    68,488/102,732.04 = 21,740.88/x
  3. Step 3: Cross multiply
    68,488x = 102,732.04 × 21,740.88
  4. Step 4: Simplify right side
    68,488x = 2,233,484,953.80
  5. Step 5: Solve for x
    x = 2,233,484,953.80/68,488
  6. Step 6: Final answer
    x = 32,611.33

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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.