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Finding the Fourth Proportional to 90,635.87, 125,092.49 and 75,504.57

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Solution

The fourth proportional to 90,635.87, 125,092.49 and 75,504.57 is: 104,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,635.87 : 125,092.49 = 75,504.57 : x
  2. Step 2: Convert to fraction form
    90,635.87/125,092.49 = 75,504.57/x
  3. Step 3: Cross multiply
    90,635.87x = 125,092.49 × 75,504.57
  4. Step 4: Simplify right side
    90,635.87x = 9,445,053,821.06
  5. Step 5: Solve for x
    x = 9,445,053,821.06/90,635.87
  6. Step 6: Final answer
    x = 104,208.78

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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.