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Finding the Fourth Proportional to 68,682.88, 94,776 and 38,874.88

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Solution

The fourth proportional to 68,682.88, 94,776 and 38,874.88 is: 53,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,682.88 : 94,776 = 38,874.88 : x
  2. Step 2: Convert to fraction form
    68,682.88/94,776 = 38,874.88/x
  3. Step 3: Cross multiply
    68,682.88x = 94,776 × 38,874.88
  4. Step 4: Simplify right side
    68,682.88x = 3,684,405,626.88
  5. Step 5: Solve for x
    x = 3,684,405,626.88/68,682.88
  6. Step 6: Final answer
    x = 53,643.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.