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Finding the Fourth Proportional to 54,270.40, 81,405.60 and 49,345.60

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Solution

The fourth proportional to 54,270.40, 81,405.60 and 49,345.60 is: 74,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,270.40 : 81,405.60 = 49,345.60 : x
  2. Step 2: Convert to fraction form
    54,270.40/81,405.60 = 49,345.60/x
  3. Step 3: Cross multiply
    54,270.40x = 81,405.60 × 49,345.60
  4. Step 4: Simplify right side
    54,270.40x = 4,017,008,175.36
  5. Step 5: Solve for x
    x = 4,017,008,175.36/54,270.40
  6. Step 6: Final answer
    x = 74,018.40

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Why These Related Problems?

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