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Finding the Fourth Proportional to 57,765.56, 86,656.55 and 17,787.89

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Solution

The fourth proportional to 57,765.56, 86,656.55 and 17,787.89 is: 26,684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,765.56 : 86,656.55 = 17,787.89 : x
  2. Step 2: Convert to fraction form
    57,765.56/86,656.55 = 17,787.89/x
  3. Step 3: Cross multiply
    57,765.56x = 86,656.55 × 17,787.89
  4. Step 4: Simplify right side
    57,765.56x = 1,541,436,656.96
  5. Step 5: Solve for x
    x = 1,541,436,656.96/57,765.56
  6. Step 6: Final answer
    x = 26,684.36

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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.