Home / 71,822.72-107,739.84-19,231.76

Finding the Fourth Proportional to 71,822.72, 107,739.84 and 19,231.76

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Solution

The fourth proportional to 71,822.72, 107,739.84 and 19,231.76 is: 28,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,822.72 : 107,739.84 = 19,231.76 : x
  2. Step 2: Convert to fraction form
    71,822.72/107,739.84 = 19,231.76/x
  3. Step 3: Cross multiply
    71,822.72x = 107,739.84 × 19,231.76
  4. Step 4: Simplify right side
    71,822.72x = 2,072,026,745.32
  5. Step 5: Solve for x
    x = 2,072,026,745.32/71,822.72
  6. Step 6: Final answer
    x = 28,849.18

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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.