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Finding the Fourth Proportional to 50,977.36, 76,448.70 and 19,379.80

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Solution

The fourth proportional to 50,977.36, 76,448.70 and 19,379.80 is: 29,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,977.36 : 76,448.70 = 19,379.80 : x
  2. Step 2: Convert to fraction form
    50,977.36/76,448.70 = 19,379.80/x
  3. Step 3: Cross multiply
    50,977.36x = 76,448.70 × 19,379.80
  4. Step 4: Simplify right side
    50,977.36x = 1,481,560,516.26
  5. Step 5: Solve for x
    x = 1,481,560,516.26/50,977.36
  6. Step 6: Final answer
    x = 29,063.11

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1.5x scale

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.