Home / 50,785.20-76,156.20-21,193.20

Finding the Fourth Proportional to 50,785.20, 76,156.20 and 21,193.20

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Solution

The fourth proportional to 50,785.20, 76,156.20 and 21,193.20 is: 31,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,785.20 : 76,156.20 = 21,193.20 : x
  2. Step 2: Convert to fraction form
    50,785.20/76,156.20 = 21,193.20/x
  3. Step 3: Cross multiply
    50,785.20x = 76,156.20 × 21,193.20
  4. Step 4: Simplify right side
    50,785.20x = 1,613,993,577.84
  5. Step 5: Solve for x
    x = 1,613,993,577.84/50,785.20
  6. Step 6: Final answer
    x = 31,780.79

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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.