Home / 45,139.92-67,711.46-21,435.28

Finding the Fourth Proportional to 45,139.92, 67,711.46 and 21,435.28

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Solution

The fourth proportional to 45,139.92, 67,711.46 and 21,435.28 is: 32,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.92 : 67,711.46 = 21,435.28 : x
  2. Step 2: Convert to fraction form
    45,139.92/67,711.46 = 21,435.28/x
  3. Step 3: Cross multiply
    45,139.92x = 67,711.46 × 21,435.28
  4. Step 4: Simplify right side
    45,139.92x = 1,451,414,104.31
  5. Step 5: Solve for x
    x = 1,451,414,104.31/45,139.92
  6. Step 6: Final answer
    x = 32,153.67

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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.