Home / 45,299.32-67,879.70-18,989.72

Finding the Fourth Proportional to 45,299.32, 67,879.70 and 18,989.72

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Solution

The fourth proportional to 45,299.32, 67,879.70 and 18,989.72 is: 28,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,299.32 : 67,879.70 = 18,989.72 : x
  2. Step 2: Convert to fraction form
    45,299.32/67,879.70 = 18,989.72/x
  3. Step 3: Cross multiply
    45,299.32x = 67,879.70 × 18,989.72
  4. Step 4: Simplify right side
    45,299.32x = 1,289,016,496.68
  5. Step 5: Solve for x
    x = 1,289,016,496.68/45,299.32
  6. Step 6: Final answer
    x = 28,455.54

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1.5x scale

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.