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Finding the Third Proportional to 18,888,543 and 40,047,009

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Solution

The third proportional to 18,888,543 and 40,047,009 is: 84,906,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888,543 : 40,047,009 = 40,047,009 : x
  2. Step 2: Convert to fraction form
    18,888,543/40,047,009 = 40,047,009/x
  3. Step 3: Cross multiply
    18,888,543x = 40,047,009 × 40,047,009
  4. Step 4: Simplify right side
    18,888,543x = 1,603,762,929,846,081
  5. Step 5: Solve for x
    x = 1,603,762,929,846,081/18,888,543
  6. Step 6: Final answer
    x = 84,906,651.08

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.