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Finding the Fourth Proportional to 72,936.42, 100,652.22 and 39,402.42

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Solution

The fourth proportional to 72,936.42, 100,652.22 and 39,402.42 is: 54,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936.42 : 100,652.22 = 39,402.42 : x
  2. Step 2: Convert to fraction form
    72,936.42/100,652.22 = 39,402.42/x
  3. Step 3: Cross multiply
    72,936.42x = 100,652.22 × 39,402.42
  4. Step 4: Simplify right side
    72,936.42x = 3,965,941,046.37
  5. Step 5: Solve for x
    x = 3,965,941,046.37/72,936.42
  6. Step 6: Final answer
    x = 54,375.32

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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.