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Finding the Third Proportional to 14,782 and 31,909

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Solution

The third proportional to 14,782 and 31,909 is: 68,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,782 : 31,909 = 31,909 : x
  2. Step 2: Convert to fraction form
    14,782/31,909 = 31,909/x
  3. Step 3: Cross multiply
    14,782x = 31,909 × 31,909
  4. Step 4: Simplify right side
    14,782x = 1,018,184,281
  5. Step 5: Solve for x
    x = 1,018,184,281/14,782
  6. Step 6: Final answer
    x = 68,880.01

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.