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Finding the Fourth Proportional to 39,940.70, 55,117.24 and 22,035.70

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Solution

The fourth proportional to 39,940.70, 55,117.24 and 22,035.70 is: 30,408.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.70 : 55,117.24 = 22,035.70 : x
  2. Step 2: Convert to fraction form
    39,940.70/55,117.24 = 22,035.70/x
  3. Step 3: Cross multiply
    39,940.70x = 55,117.24 × 22,035.70
  4. Step 4: Simplify right side
    39,940.70x = 1,214,546,772.59
  5. Step 5: Solve for x
    x = 1,214,546,772.59/39,940.70
  6. Step 6: Final answer
    x = 30,408.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.