Home / 45,856.78-68,785.44-20,879.36

Finding the Fourth Proportional to 45,856.78, 68,785.44 and 20,879.36

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Solution

The fourth proportional to 45,856.78, 68,785.44 and 20,879.36 is: 31,319.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,856.78 : 68,785.44 = 20,879.36 : x
  2. Step 2: Convert to fraction form
    45,856.78/68,785.44 = 20,879.36/x
  3. Step 3: Cross multiply
    45,856.78x = 68,785.44 × 20,879.36
  4. Step 4: Simplify right side
    45,856.78x = 1,436,195,964.52
  5. Step 5: Solve for x
    x = 1,436,195,964.52/45,856.78
  6. Step 6: Final answer
    x = 31,319.16

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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.