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Finding the Fourth Proportional to 31,305.36, 43,200.84 and 17,158.32

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Solution

The fourth proportional to 31,305.36, 43,200.84 and 17,158.32 is: 23,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,305.36 : 43,200.84 = 17,158.32 : x
  2. Step 2: Convert to fraction form
    31,305.36/43,200.84 = 17,158.32/x
  3. Step 3: Cross multiply
    31,305.36x = 43,200.84 × 17,158.32
  4. Step 4: Simplify right side
    31,305.36x = 741,253,836.99
  5. Step 5: Solve for x
    x = 741,253,836.99/31,305.36
  6. Step 6: Final answer
    x = 23,678.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.