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Finding the Third Proportional to 57,142 and 83,479

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Solution

The third proportional to 57,142 and 83,479 is: 121,954.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,142 : 83,479 = 83,479 : x
  2. Step 2: Convert to fraction form
    57,142/83,479 = 83,479/x
  3. Step 3: Cross multiply
    57,142x = 83,479 × 83,479
  4. Step 4: Simplify right side
    57,142x = 6,968,743,441
  5. Step 5: Solve for x
    x = 6,968,743,441/57,142
  6. Step 6: Final answer
    x = 121,954.84

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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.