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Finding the Fourth Proportional to 57,964.60, 86,963.10 and 28,383.40

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Solution

The fourth proportional to 57,964.60, 86,963.10 and 28,383.40 is: 42,583.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,964.60 : 86,963.10 = 28,383.40 : x
  2. Step 2: Convert to fraction form
    57,964.60/86,963.10 = 28,383.40/x
  3. Step 3: Cross multiply
    57,964.60x = 86,963.10 × 28,383.40
  4. Step 4: Simplify right side
    57,964.60x = 2,468,308,452.54
  5. Step 5: Solve for x
    x = 2,468,308,452.54/57,964.60
  6. Step 6: Final answer
    x = 42,583.03

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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.