Home / 40,721.62-61,103.32-19,398.48

Finding the Fourth Proportional to 40,721.62, 61,103.32 and 19,398.48

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Solution

The fourth proportional to 40,721.62, 61,103.32 and 19,398.48 is: 29,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,721.62 : 61,103.32 = 19,398.48 : x
  2. Step 2: Convert to fraction form
    40,721.62/61,103.32 = 19,398.48/x
  3. Step 3: Cross multiply
    40,721.62x = 61,103.32 × 19,398.48
  4. Step 4: Simplify right side
    40,721.62x = 1,185,311,426.69
  5. Step 5: Solve for x
    x = 1,185,311,426.69/40,721.62
  6. Step 6: Final answer
    x = 29,107.67

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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.