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Finding the Third Proportional to 14,145.50 and 31,115.75

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Solution

The third proportional to 14,145.50 and 31,115.75 is: 68,445.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.50 : 31,115.75 = 31,115.75 : x
  2. Step 2: Convert to fraction form
    14,145.50/31,115.75 = 31,115.75/x
  3. Step 3: Cross multiply
    14,145.50x = 31,115.75 × 31,115.75
  4. Step 4: Simplify right side
    14,145.50x = 968,189,898.06
  5. Step 5: Solve for x
    x = 968,189,898.06/14,145.50
  6. Step 6: Final answer
    x = 68,445.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.