Home / 45,139.92-67,711.44-21,435.26

Finding the Fourth Proportional to 45,139.92, 67,711.44 and 21,435.26

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Solution

The fourth proportional to 45,139.92, 67,711.44 and 21,435.26 is: 32,153.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.92 : 67,711.44 = 21,435.26 : x
  2. Step 2: Convert to fraction form
    45,139.92/67,711.44 = 21,435.26/x
  3. Step 3: Cross multiply
    45,139.92x = 67,711.44 × 21,435.26
  4. Step 4: Simplify right side
    45,139.92x = 1,451,412,321.37
  5. Step 5: Solve for x
    x = 1,451,412,321.37/45,139.92
  6. Step 6: Final answer
    x = 32,153.63

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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.