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Finding the Fourth Proportional to 63,879.40, 95,732.70 and 42,759.40

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Solution

The fourth proportional to 63,879.40, 95,732.70 and 42,759.40 is: 64,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,879.40 : 95,732.70 = 42,759.40 : x
  2. Step 2: Convert to fraction form
    63,879.40/95,732.70 = 42,759.40/x
  3. Step 3: Cross multiply
    63,879.40x = 95,732.70 × 42,759.40
  4. Step 4: Simplify right side
    63,879.40x = 4,093,472,812.38
  5. Step 5: Solve for x
    x = 4,093,472,812.38/63,879.40
  6. Step 6: Final answer
    x = 64,081.27

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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.