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Finding the Third Proportional to 18,243,810 and 39,663,072

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Solution

The third proportional to 18,243,810 and 39,663,072 is: 86,229,755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243,810 : 39,663,072 = 39,663,072 : x
  2. Step 2: Convert to fraction form
    18,243,810/39,663,072 = 39,663,072/x
  3. Step 3: Cross multiply
    18,243,810x = 39,663,072 × 39,663,072
  4. Step 4: Simplify right side
    18,243,810x = 1,573,159,280,477,184
  5. Step 5: Solve for x
    x = 1,573,159,280,477,184/18,243,810
  6. Step 6: Final answer
    x = 86,229,755.76

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.