Home / 53,138.20-73,338.78-40,370.44

Finding the Fourth Proportional to 53,138.20, 73,338.78 and 40,370.44

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Solution

The fourth proportional to 53,138.20, 73,338.78 and 40,370.44 is: 55,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.20 : 73,338.78 = 40,370.44 : x
  2. Step 2: Convert to fraction form
    53,138.20/73,338.78 = 40,370.44/x
  3. Step 3: Cross multiply
    53,138.20x = 73,338.78 × 40,370.44
  4. Step 4: Simplify right side
    53,138.20x = 2,960,718,817.66
  5. Step 5: Solve for x
    x = 2,960,718,817.66/53,138.20
  6. Step 6: Final answer
    x = 55,717.33

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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.