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Finding the Fourth Proportional to 85,755.88, 118,351.87 and 49,458.74

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Solution

The fourth proportional to 85,755.88, 118,351.87 and 49,458.74 is: 68,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755.88 : 118,351.87 = 49,458.74 : x
  2. Step 2: Convert to fraction form
    85,755.88/118,351.87 = 49,458.74/x
  3. Step 3: Cross multiply
    85,755.88x = 118,351.87 × 49,458.74
  4. Step 4: Simplify right side
    85,755.88x = 5,853,534,366.84
  5. Step 5: Solve for x
    x = 5,853,534,366.84/85,755.88
  6. Step 6: Final answer
    x = 68,258.11

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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.