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Finding the Third Proportional to 39,655 and 57,900

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Solution

The third proportional to 39,655 and 57,900 is: 84,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,655 : 57,900 = 57,900 : x
  2. Step 2: Convert to fraction form
    39,655/57,900 = 57,900/x
  3. Step 3: Cross multiply
    39,655x = 57,900 × 57,900
  4. Step 4: Simplify right side
    39,655x = 3,352,410,000
  5. Step 5: Solve for x
    x = 3,352,410,000/39,655
  6. Step 6: Final answer
    x = 84,539.40

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.