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Finding the Fourth Proportional to 68,181.72, 102,287.98 and 20,801.08

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Solution

The fourth proportional to 68,181.72, 102,287.98 and 20,801.08 is: 31,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,181.72 : 102,287.98 = 20,801.08 : x
  2. Step 2: Convert to fraction form
    68,181.72/102,287.98 = 20,801.08/x
  3. Step 3: Cross multiply
    68,181.72x = 102,287.98 × 20,801.08
  4. Step 4: Simplify right side
    68,181.72x = 2,127,700,455.02
  5. Step 5: Solve for x
    x = 2,127,700,455.02/68,181.72
  6. Step 6: Final answer
    x = 31,206.32

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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.