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Finding the Fourth Proportional to 57,893.20, 86,844.60 and 18,449.20

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Solution

The fourth proportional to 57,893.20, 86,844.60 and 18,449.20 is: 27,675.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,893.20 : 86,844.60 = 18,449.20 : x
  2. Step 2: Convert to fraction form
    57,893.20/86,844.60 = 18,449.20/x
  3. Step 3: Cross multiply
    57,893.20x = 86,844.60 × 18,449.20
  4. Step 4: Simplify right side
    57,893.20x = 1,602,213,394.32
  5. Step 5: Solve for x
    x = 1,602,213,394.32/57,893.20
  6. Step 6: Final answer
    x = 27,675.33

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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.