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Finding the Fourth Proportional to 31,252.70, 43,128.36 and 17,105.40

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Solution

The fourth proportional to 31,252.70, 43,128.36 and 17,105.40 is: 23,605.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,252.70 : 43,128.36 = 17,105.40 : x
  2. Step 2: Convert to fraction form
    31,252.70/43,128.36 = 17,105.40/x
  3. Step 3: Cross multiply
    31,252.70x = 43,128.36 × 17,105.40
  4. Step 4: Simplify right side
    31,252.70x = 737,727,849.14
  5. Step 5: Solve for x
    x = 737,727,849.14/31,252.70
  6. Step 6: Final answer
    x = 23,605.25

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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.