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Finding the Third Proportional to 18,301,086 and 39,438,711

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Solution

The third proportional to 18,301,086 and 39,438,711 is: 84,990,143.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301,086 : 39,438,711 = 39,438,711 : x
  2. Step 2: Convert to fraction form
    18,301,086/39,438,711 = 39,438,711/x
  3. Step 3: Cross multiply
    18,301,086x = 39,438,711 × 39,438,711
  4. Step 4: Simplify right side
    18,301,086x = 1,555,411,925,341,521
  5. Step 5: Solve for x
    x = 1,555,411,925,341,521/18,301,086
  6. Step 6: Final answer
    x = 84,990,143.50

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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.