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Finding the Fourth Proportional to 68,525.34, 102,766.14 and 21,767.28

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Solution

The fourth proportional to 68,525.34, 102,766.14 and 21,767.28 is: 32,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,525.34 : 102,766.14 = 21,767.28 : x
  2. Step 2: Convert to fraction form
    68,525.34/102,766.14 = 21,767.28/x
  3. Step 3: Cross multiply
    68,525.34x = 102,766.14 × 21,767.28
  4. Step 4: Simplify right side
    68,525.34x = 2,236,939,343.90
  5. Step 5: Solve for x
    x = 2,236,939,343.90/68,525.34
  6. Step 6: Final answer
    x = 32,643.97

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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.