Home / 75,409.31-113,113.86-19,249.43

Finding the Fourth Proportional to 75,409.31, 113,113.86 and 19,249.43

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Solution

The fourth proportional to 75,409.31, 113,113.86 and 19,249.43 is: 28,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,409.31 : 113,113.86 = 19,249.43 : x
  2. Step 2: Convert to fraction form
    75,409.31/113,113.86 = 19,249.43/x
  3. Step 3: Cross multiply
    75,409.31x = 113,113.86 × 19,249.43
  4. Step 4: Simplify right side
    75,409.31x = 2,177,376,764.53
  5. Step 5: Solve for x
    x = 2,177,376,764.53/75,409.31
  6. Step 6: Final answer
    x = 28,874.11

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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.