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Finding the Fourth Proportional to 79,912.32, 119,837.32 and 29,965.20

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Solution

The fourth proportional to 79,912.32, 119,837.32 and 29,965.20 is: 44,936.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,912.32 : 119,837.32 = 29,965.20 : x
  2. Step 2: Convert to fraction form
    79,912.32/119,837.32 = 29,965.20/x
  3. Step 3: Cross multiply
    79,912.32x = 119,837.32 × 29,965.20
  4. Step 4: Simplify right side
    79,912.32x = 3,590,949,261.26
  5. Step 5: Solve for x
    x = 3,590,949,261.26/79,912.32
  6. Step 6: Final answer
    x = 44,936.12

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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.