Home / 50,956.08-76,379.04-21,390

Finding the Fourth Proportional to 50,956.08, 76,379.04 and 21,390

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Solution

The fourth proportional to 50,956.08, 76,379.04 and 21,390 is: 32,061.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,956.08 : 76,379.04 = 21,390 : x
  2. Step 2: Convert to fraction form
    50,956.08/76,379.04 = 21,390/x
  3. Step 3: Cross multiply
    50,956.08x = 76,379.04 × 21,390
  4. Step 4: Simplify right side
    50,956.08x = 1,633,747,665.60
  5. Step 5: Solve for x
    x = 1,633,747,665.60/50,956.08
  6. Step 6: Final answer
    x = 32,061.88

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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.