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Finding the Fourth Proportional to 54,214.40, 81,321.60 and 19,157.60

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Solution

The fourth proportional to 54,214.40, 81,321.60 and 19,157.60 is: 28,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,214.40 : 81,321.60 = 19,157.60 : x
  2. Step 2: Convert to fraction form
    54,214.40/81,321.60 = 19,157.60/x
  3. Step 3: Cross multiply
    54,214.40x = 81,321.60 × 19,157.60
  4. Step 4: Simplify right side
    54,214.40x = 1,557,926,684.16
  5. Step 5: Solve for x
    x = 1,557,926,684.16/54,214.40
  6. Step 6: Final answer
    x = 28,736.40

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1.5x scale

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.