Home / 50,343.10-75,450.06-20,781.70

Finding the Fourth Proportional to 50,343.10, 75,450.06 and 20,781.70

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Solution

The fourth proportional to 50,343.10, 75,450.06 and 20,781.70 is: 31,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,343.10 : 75,450.06 = 20,781.70 : x
  2. Step 2: Convert to fraction form
    50,343.10/75,450.06 = 20,781.70/x
  3. Step 3: Cross multiply
    50,343.10x = 75,450.06 × 20,781.70
  4. Step 4: Simplify right side
    50,343.10x = 1,567,980,511.90
  5. Step 5: Solve for x
    x = 1,567,980,511.90/50,343.10
  6. Step 6: Final answer
    x = 31,145.89

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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.