Home / 45,138.92-67,709.94-21,434.26

Finding the Fourth Proportional to 45,138.92, 67,709.94 and 21,434.26

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Solution

The fourth proportional to 45,138.92, 67,709.94 and 21,434.26 is: 32,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.92 : 67,709.94 = 21,434.26 : x
  2. Step 2: Convert to fraction form
    45,138.92/67,709.94 = 21,434.26/x
  3. Step 3: Cross multiply
    45,138.92x = 67,709.94 × 21,434.26
  4. Step 4: Simplify right side
    45,138.92x = 1,451,312,458.54
  5. Step 5: Solve for x
    x = 1,451,312,458.54/45,138.92
  6. Step 6: Final answer
    x = 32,152.13

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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.