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Finding the Third Proportional to 18,991,952,720 and 40,440,225,742

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Solution

The third proportional to 18,991,952,720 and 40,440,225,742 is: 86,110,779,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991,952,720 : 40,440,225,742 = 40,440,225,742 : x
  2. Step 2: Convert to fraction form
    18,991,952,720/40,440,225,742 = 40,440,225,742/x
  3. Step 3: Cross multiply
    18,991,952,720x = 40,440,225,742 × 40,440,225,742
  4. Step 4: Simplify right side
    18,991,952,720x = 1,635,411,858,063,919,415,296
  5. Step 5: Solve for x
    x = 1,635,411,858,063,919,415,296/18,991,952,720
  6. Step 6: Final answer
    x = 86,110,779,769.46

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.