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Finding the Fourth Proportional to 54,016.53, 74,545.20 and 30,143.31

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Solution

The fourth proportional to 54,016.53, 74,545.20 and 30,143.31 is: 41,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,016.53 : 74,545.20 = 30,143.31 : x
  2. Step 2: Convert to fraction form
    54,016.53/74,545.20 = 30,143.31/x
  3. Step 3: Cross multiply
    54,016.53x = 74,545.20 × 30,143.31
  4. Step 4: Simplify right side
    54,016.53x = 2,247,039,072.61
  5. Step 5: Solve for x
    x = 2,247,039,072.61/54,016.53
  6. Step 6: Final answer
    x = 41,599.10

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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.