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Finding the Fourth Proportional to 68,857.60, 95,043.84 and 40,572.40

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Solution

The fourth proportional to 68,857.60, 95,043.84 and 40,572.40 is: 56,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,857.60 : 95,043.84 = 40,572.40 : x
  2. Step 2: Convert to fraction form
    68,857.60/95,043.84 = 40,572.40/x
  3. Step 3: Cross multiply
    68,857.60x = 95,043.84 × 40,572.40
  4. Step 4: Simplify right side
    68,857.60x = 3,856,156,694.02
  5. Step 5: Solve for x
    x = 3,856,156,694.02/68,857.60
  6. Step 6: Final answer
    x = 56,001.90

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1.5x scale

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.