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Finding the Third Proportional to 20,429,790,212 and 28,757,109,969

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Solution

The third proportional to 20,429,790,212 and 28,757,109,969 is: 40,478,701,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429,790,212 : 28,757,109,969 = 28,757,109,969 : x
  2. Step 2: Convert to fraction form
    20,429,790,212/28,757,109,969 = 28,757,109,969/x
  3. Step 3: Cross multiply
    20,429,790,212x = 28,757,109,969 × 28,757,109,969
  4. Step 4: Simplify right side
    20,429,790,212x = 826,971,373,769,159,213,056
  5. Step 5: Solve for x
    x = 826,971,373,769,159,213,056/20,429,790,212
  6. Step 6: Final answer
    x = 40,478,701,209.74

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.