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Finding the Fourth Proportional to 31,605.29, 43,616.57 and 18,176.54

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Solution

The fourth proportional to 31,605.29, 43,616.57 and 18,176.54 is: 25,084.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,605.29 : 43,616.57 = 18,176.54 : x
  2. Step 2: Convert to fraction form
    31,605.29/43,616.57 = 18,176.54/x
  3. Step 3: Cross multiply
    31,605.29x = 43,616.57 × 18,176.54
  4. Step 4: Simplify right side
    31,605.29x = 792,798,483.75
  5. Step 5: Solve for x
    x = 792,798,483.75/31,605.29
  6. Step 6: Final answer
    x = 25,084.36

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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.