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Finding the Fourth Proportional to 73,142.36, 100,936.46 and 39,608.36

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Solution

The fourth proportional to 73,142.36, 100,936.46 and 39,608.36 is: 54,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,142.36 : 100,936.46 = 39,608.36 : x
  2. Step 2: Convert to fraction form
    73,142.36/100,936.46 = 39,608.36/x
  3. Step 3: Cross multiply
    73,142.36x = 100,936.46 × 39,608.36
  4. Step 4: Simplify right side
    73,142.36x = 3,997,927,644.81
  5. Step 5: Solve for x
    x = 3,997,927,644.81/73,142.36
  6. Step 6: Final answer
    x = 54,659.54

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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.