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Finding the Fourth Proportional to 55,640.22, 76,741.62 and 38,644.49

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Solution

The fourth proportional to 55,640.22, 76,741.62 and 38,644.49 is: 53,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,640.22 : 76,741.62 = 38,644.49 : x
  2. Step 2: Convert to fraction form
    55,640.22/76,741.62 = 38,644.49/x
  3. Step 3: Cross multiply
    55,640.22x = 76,741.62 × 38,644.49
  4. Step 4: Simplify right side
    55,640.22x = 2,965,640,382.97
  5. Step 5: Solve for x
    x = 2,965,640,382.97/55,640.22
  6. Step 6: Final answer
    x = 53,300.30

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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.