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Finding the Fourth Proportional to 40,293, 55,605.33 and 22,143.48

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Solution

The fourth proportional to 40,293, 55,605.33 and 22,143.48 is: 30,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,293 : 55,605.33 = 22,143.48 : x
  2. Step 2: Convert to fraction form
    40,293/55,605.33 = 22,143.48/x
  3. Step 3: Cross multiply
    40,293x = 55,605.33 × 22,143.48
  4. Step 4: Simplify right side
    40,293x = 1,231,295,512.75
  5. Step 5: Solve for x
    x = 1,231,295,512.75/40,293
  6. Step 6: Final answer
    x = 30,558.55

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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.