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Finding the Fourth Proportional to 90,995.60, 136,493.75 and 27,815.49

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Solution

The fourth proportional to 90,995.60, 136,493.75 and 27,815.49 is: 41,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,995.60 : 136,493.75 = 27,815.49 : x
  2. Step 2: Convert to fraction form
    90,995.60/136,493.75 = 27,815.49/x
  3. Step 3: Cross multiply
    90,995.60x = 136,493.75 × 27,815.49
  4. Step 4: Simplify right side
    90,995.60x = 3,796,640,607.73
  5. Step 5: Solve for x
    x = 3,796,640,607.73/90,995.60
  6. Step 6: Final answer
    x = 41,723.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.