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Finding the Third Proportional to 18,979,969 and 28,736,129

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Solution

The third proportional to 18,979,969 and 28,736,129 is: 43,507,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979,969 : 28,736,129 = 28,736,129 : x
  2. Step 2: Convert to fraction form
    18,979,969/28,736,129 = 28,736,129/x
  3. Step 3: Cross multiply
    18,979,969x = 28,736,129 × 28,736,129
  4. Step 4: Simplify right side
    18,979,969x = 825,765,109,904,641
  5. Step 5: Solve for x
    x = 825,765,109,904,641/18,979,969
  6. Step 6: Final answer
    x = 43,507,189.60

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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.