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Finding the Fourth Proportional to 85,517.88, 118,025.82 and 47,799.96

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Solution

The fourth proportional to 85,517.88, 118,025.82 and 47,799.96 is: 65,970.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.88 : 118,025.82 = 47,799.96 : x
  2. Step 2: Convert to fraction form
    85,517.88/118,025.82 = 47,799.96/x
  3. Step 3: Cross multiply
    85,517.88x = 118,025.82 × 47,799.96
  4. Step 4: Simplify right side
    85,517.88x = 5,641,629,474.97
  5. Step 5: Solve for x
    x = 5,641,629,474.97/85,517.88
  6. Step 6: Final answer
    x = 65,970.17

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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.