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Finding the Fourth Proportional to 68,740.50, 94,847.49 and 40,449.30

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Solution

The fourth proportional to 68,740.50, 94,847.49 and 40,449.30 is: 55,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,740.50 : 94,847.49 = 40,449.30 : x
  2. Step 2: Convert to fraction form
    68,740.50/94,847.49 = 40,449.30/x
  3. Step 3: Cross multiply
    68,740.50x = 94,847.49 × 40,449.30
  4. Step 4: Simplify right side
    68,740.50x = 3,836,514,577.26
  5. Step 5: Solve for x
    x = 3,836,514,577.26/68,740.50
  6. Step 6: Final answer
    x = 55,811.56

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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.