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Finding the Fourth Proportional to 85,605.66, 118,145.79 and 49,797.18

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Solution

The fourth proportional to 85,605.66, 118,145.79 and 49,797.18 is: 68,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605.66 : 118,145.79 = 49,797.18 : x
  2. Step 2: Convert to fraction form
    85,605.66/118,145.79 = 49,797.18/x
  3. Step 3: Cross multiply
    85,605.66x = 118,145.79 × 49,797.18
  4. Step 4: Simplify right side
    85,605.66x = 5,883,327,170.87
  5. Step 5: Solve for x
    x = 5,883,327,170.87/85,605.66
  6. Step 6: Final answer
    x = 68,725.91

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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.