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Finding the Third Proportional to 30,402 and 65,331

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Solution

The third proportional to 30,402 and 65,331 is: 140,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,402 : 65,331 = 65,331 : x
  2. Step 2: Convert to fraction form
    30,402/65,331 = 65,331/x
  3. Step 3: Cross multiply
    30,402x = 65,331 × 65,331
  4. Step 4: Simplify right side
    30,402x = 4,268,139,561
  5. Step 5: Solve for x
    x = 4,268,139,561/30,402
  6. Step 6: Final answer
    x = 140,390.09

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.