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Finding the Fourth Proportional to 69,067.76, 95,313.88 and 40,787.40

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Solution

The fourth proportional to 69,067.76, 95,313.88 and 40,787.40 is: 56,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,067.76 : 95,313.88 = 40,787.40 : x
  2. Step 2: Convert to fraction form
    69,067.76/95,313.88 = 40,787.40/x
  3. Step 3: Cross multiply
    69,067.76x = 95,313.88 × 40,787.40
  4. Step 4: Simplify right side
    69,067.76x = 3,887,605,349.11
  5. Step 5: Solve for x
    x = 3,887,605,349.11/69,067.76
  6. Step 6: Final answer
    x = 56,286.83

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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.