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Finding the Fourth Proportional to 63,787.86, 95,686.68 and 19,418.40

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Solution

The fourth proportional to 63,787.86, 95,686.68 and 19,418.40 is: 29,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,787.86 : 95,686.68 = 19,418.40 : x
  2. Step 2: Convert to fraction form
    63,787.86/95,686.68 = 19,418.40/x
  3. Step 3: Cross multiply
    63,787.86x = 95,686.68 × 19,418.40
  4. Step 4: Simplify right side
    63,787.86x = 1,858,082,226.91
  5. Step 5: Solve for x
    x = 1,858,082,226.91/63,787.86
  6. Step 6: Final answer
    x = 29,129.09

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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.