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Finding the Fourth Proportional to 68,471.64, 94,482.18 and 40,167

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Solution

The fourth proportional to 68,471.64, 94,482.18 and 40,167 is: 55,425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,471.64 : 94,482.18 = 40,167 : x
  2. Step 2: Convert to fraction form
    68,471.64/94,482.18 = 40,167/x
  3. Step 3: Cross multiply
    68,471.64x = 94,482.18 × 40,167
  4. Step 4: Simplify right side
    68,471.64x = 3,795,065,724.06
  5. Step 5: Solve for x
    x = 3,795,065,724.06/68,471.64
  6. Step 6: Final answer
    x = 55,425.37

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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.