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Finding the Fourth Proportional to 61,277.72, 91,787.31 and 28,025.73

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Solution

The fourth proportional to 61,277.72, 91,787.31 and 28,025.73 is: 41,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,277.72 : 91,787.31 = 28,025.73 : x
  2. Step 2: Convert to fraction form
    61,277.72/91,787.31 = 28,025.73/x
  3. Step 3: Cross multiply
    61,277.72x = 91,787.31 × 28,025.73
  4. Step 4: Simplify right side
    61,277.72x = 2,572,406,367.49
  5. Step 5: Solve for x
    x = 2,572,406,367.49/61,277.72
  6. Step 6: Final answer
    x = 41,979.48

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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.