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Finding the Fourth Proportional to 90,195.42, 124,469.10 and 49,908.42

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Solution

The fourth proportional to 90,195.42, 124,469.10 and 49,908.42 is: 68,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,195.42 : 124,469.10 = 49,908.42 : x
  2. Step 2: Convert to fraction form
    90,195.42/124,469.10 = 49,908.42/x
  3. Step 3: Cross multiply
    90,195.42x = 124,469.10 × 49,908.42
  4. Step 4: Simplify right side
    90,195.42x = 6,212,056,119.82
  5. Step 5: Solve for x
    x = 6,212,056,119.82/90,195.42
  6. Step 6: Final answer
    x = 68,873.30

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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.