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Finding the Fourth Proportional to 68,856.60, 95,042.46 and 40,571.40

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Solution

The fourth proportional to 68,856.60, 95,042.46 and 40,571.40 is: 56,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,856.60 : 95,042.46 = 40,571.40 : x
  2. Step 2: Convert to fraction form
    68,856.60/95,042.46 = 40,571.40/x
  3. Step 3: Cross multiply
    68,856.60x = 95,042.46 × 40,571.40
  4. Step 4: Simplify right side
    68,856.60x = 3,856,005,661.64
  5. Step 5: Solve for x
    x = 3,856,005,661.64/68,856.60
  6. Step 6: Final answer
    x = 56,000.52

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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.