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Finding the Third Proportional to 38,904 and 57,130

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Solution

The third proportional to 38,904 and 57,130 is: 83,894.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,904 : 57,130 = 57,130 : x
  2. Step 2: Convert to fraction form
    38,904/57,130 = 57,130/x
  3. Step 3: Cross multiply
    38,904x = 57,130 × 57,130
  4. Step 4: Simplify right side
    38,904x = 3,263,836,900
  5. Step 5: Solve for x
    x = 3,263,836,900/38,904
  6. Step 6: Final answer
    x = 83,894.64

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.