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Finding the Fourth Proportional to 92,872.44, 128,164.50 and 50,431.32

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Solution

The fourth proportional to 92,872.44, 128,164.50 and 50,431.32 is: 69,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,872.44 : 128,164.50 = 50,431.32 : x
  2. Step 2: Convert to fraction form
    92,872.44/128,164.50 = 50,431.32/x
  3. Step 3: Cross multiply
    92,872.44x = 128,164.50 × 50,431.32
  4. Step 4: Simplify right side
    92,872.44x = 6,463,504,912.14
  5. Step 5: Solve for x
    x = 6,463,504,912.14/92,872.44
  6. Step 6: Final answer
    x = 69,595.51

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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.