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Finding the Fourth Proportional to 49,911.57, 74,867.13 and 20,331.57

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Solution

The fourth proportional to 49,911.57, 74,867.13 and 20,331.57 is: 30,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,911.57 : 74,867.13 = 20,331.57 : x
  2. Step 2: Convert to fraction form
    49,911.57/74,867.13 = 20,331.57/x
  3. Step 3: Cross multiply
    49,911.57x = 74,867.13 × 20,331.57
  4. Step 4: Simplify right side
    49,911.57x = 1,522,166,294.29
  5. Step 5: Solve for x
    x = 1,522,166,294.29/49,911.57
  6. Step 6: Final answer
    x = 30,497.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.