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Finding the Fourth Proportional to 54,220.53, 74,824.32 and 30,347.20

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Solution

The fourth proportional to 54,220.53, 74,824.32 and 30,347.20 is: 41,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,220.53 : 74,824.32 = 30,347.20 : x
  2. Step 2: Convert to fraction form
    54,220.53/74,824.32 = 30,347.20/x
  3. Step 3: Cross multiply
    54,220.53x = 74,824.32 × 30,347.20
  4. Step 4: Simplify right side
    54,220.53x = 2,270,708,452.17
  5. Step 5: Solve for x
    x = 2,270,708,452.17/54,220.53
  6. Step 6: Final answer
    x = 41,879.13

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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.