Home / 42,786.92-64,186.14-15,078.44

Finding the Fourth Proportional to 42,786.92, 64,186.14 and 15,078.44

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Solution

The fourth proportional to 42,786.92, 64,186.14 and 15,078.44 is: 22,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,786.92 : 64,186.14 = 15,078.44 : x
  2. Step 2: Convert to fraction form
    42,786.92/64,186.14 = 15,078.44/x
  3. Step 3: Cross multiply
    42,786.92x = 64,186.14 × 15,078.44
  4. Step 4: Simplify right side
    42,786.92x = 967,826,860.82
  5. Step 5: Solve for x
    x = 967,826,860.82/42,786.92
  6. Step 6: Final answer
    x = 22,619.69

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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.