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Finding the Third Proportional to 18,509,520 and 39,860,520

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Solution

The third proportional to 18,509,520 and 39,860,520 is: 85,840,208.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509,520 : 39,860,520 = 39,860,520 : x
  2. Step 2: Convert to fraction form
    18,509,520/39,860,520 = 39,860,520/x
  3. Step 3: Cross multiply
    18,509,520x = 39,860,520 × 39,860,520
  4. Step 4: Simplify right side
    18,509,520x = 1,588,861,054,670,400
  5. Step 5: Solve for x
    x = 1,588,861,054,670,400/18,509,520
  6. Step 6: Final answer
    x = 85,840,208.43

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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.