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Finding the Third Proportional to 13,920,078.75 and 21,059,245.50

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Solution

The third proportional to 13,920,078.75 and 21,059,245.50 is: 31,859,864.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920,078.75 : 21,059,245.50 = 21,059,245.50 : x
  2. Step 2: Convert to fraction form
    13,920,078.75/21,059,245.50 = 21,059,245.50/x
  3. Step 3: Cross multiply
    13,920,078.75x = 21,059,245.50 × 21,059,245.50
  4. Step 4: Simplify right side
    13,920,078.75x = 443,491,821,029,270.25
  5. Step 5: Solve for x
    x = 443,491,821,029,270.25/13,920,078.75
  6. Step 6: Final answer
    x = 31,859,864.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.