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Finding the Fourth Proportional to 40,391.80, 55,738.52 and 22,486.34

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Solution

The fourth proportional to 40,391.80, 55,738.52 and 22,486.34 is: 31,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,391.80 : 55,738.52 = 22,486.34 : x
  2. Step 2: Convert to fraction form
    40,391.80/55,738.52 = 22,486.34/x
  3. Step 3: Cross multiply
    40,391.80x = 55,738.52 × 22,486.34
  4. Step 4: Simplify right side
    40,391.80x = 1,253,355,311.82
  5. Step 5: Solve for x
    x = 1,253,355,311.82/40,391.80
  6. Step 6: Final answer
    x = 31,029.94

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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.