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Finding the Fourth Proportional to 57,787.48, 86,693.10 and 18,343.72

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Solution

The fourth proportional to 57,787.48, 86,693.10 and 18,343.72 is: 27,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.48 : 86,693.10 = 18,343.72 : x
  2. Step 2: Convert to fraction form
    57,787.48/86,693.10 = 18,343.72/x
  3. Step 3: Cross multiply
    57,787.48x = 86,693.10 × 18,343.72
  4. Step 4: Simplify right side
    57,787.48x = 1,590,273,952.33
  5. Step 5: Solve for x
    x = 1,590,273,952.33/57,787.48
  6. Step 6: Final answer
    x = 27,519.35

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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.