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Finding the Fourth Proportional to 68,468.18, 102,682.83 and 21,719.84

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Solution

The fourth proportional to 68,468.18, 102,682.83 and 21,719.84 is: 32,573.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,468.18 : 102,682.83 = 21,719.84 : x
  2. Step 2: Convert to fraction form
    68,468.18/102,682.83 = 21,719.84/x
  3. Step 3: Cross multiply
    68,468.18x = 102,682.83 × 21,719.84
  4. Step 4: Simplify right side
    68,468.18x = 2,230,254,638.35
  5. Step 5: Solve for x
    x = 2,230,254,638.35/68,468.18
  6. Step 6: Final answer
    x = 32,573.59

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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.