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Finding the Fourth Proportional to 85,606.70, 118,133.79 and 49,797.74

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Solution

The fourth proportional to 85,606.70, 118,133.79 and 49,797.74 is: 68,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,606.70 : 118,133.79 = 49,797.74 : x
  2. Step 2: Convert to fraction form
    85,606.70/118,133.79 = 49,797.74/x
  3. Step 3: Cross multiply
    85,606.70x = 118,133.79 × 49,797.74
  4. Step 4: Simplify right side
    85,606.70x = 5,882,795,759.63
  5. Step 5: Solve for x
    x = 5,882,795,759.63/85,606.70
  6. Step 6: Final answer
    x = 68,718.87

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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.