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Finding the Fourth Proportional to 68,568.84, 94,625.64 and 40,275

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Solution

The fourth proportional to 68,568.84, 94,625.64 and 40,275 is: 55,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,568.84 : 94,625.64 = 40,275 : x
  2. Step 2: Convert to fraction form
    68,568.84/94,625.64 = 40,275/x
  3. Step 3: Cross multiply
    68,568.84x = 94,625.64 × 40,275
  4. Step 4: Simplify right side
    68,568.84x = 3,811,047,651
  5. Step 5: Solve for x
    x = 3,811,047,651/68,568.84
  6. Step 6: Final answer
    x = 55,579.88

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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.