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Finding the Third Proportional to 18,399,311 and 40,140,653

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Solution

The third proportional to 18,399,311 and 40,140,653 is: 87,572,410.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399,311 : 40,140,653 = 40,140,653 : x
  2. Step 2: Convert to fraction form
    18,399,311/40,140,653 = 40,140,653/x
  3. Step 3: Cross multiply
    18,399,311x = 40,140,653 × 40,140,653
  4. Step 4: Simplify right side
    18,399,311x = 1,611,272,023,266,409
  5. Step 5: Solve for x
    x = 1,611,272,023,266,409/18,399,311
  6. Step 6: Final answer
    x = 87,572,410.91

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.