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Finding the Fourth Proportional to 85,120.87, 117,448.92 and 49,308.73

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Solution

The fourth proportional to 85,120.87, 117,448.92 and 49,308.73 is: 68,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,120.87 : 117,448.92 = 49,308.73 : x
  2. Step 2: Convert to fraction form
    85,120.87/117,448.92 = 49,308.73/x
  3. Step 3: Cross multiply
    85,120.87x = 117,448.92 × 49,308.73
  4. Step 4: Simplify right side
    85,120.87x = 5,791,257,085.07
  5. Step 5: Solve for x
    x = 5,791,257,085.07/85,120.87
  6. Step 6: Final answer
    x = 68,035.69

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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.