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Finding the Third Proportional to 20,958,891,642 and 45,454,080,420

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Solution

The third proportional to 20,958,891,642 and 45,454,080,420 is: 98,577,418,220.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,891,642 : 45,454,080,420 = 45,454,080,420 : x
  2. Step 2: Convert to fraction form
    20,958,891,642/45,454,080,420 = 45,454,080,420/x
  3. Step 3: Cross multiply
    20,958,891,642x = 45,454,080,420 × 45,454,080,420
  4. Step 4: Simplify right side
    20,958,891,642x = 2,066,073,426,827,827,478,528
  5. Step 5: Solve for x
    x = 2,066,073,426,827,827,478,528/20,958,891,642
  6. Step 6: Final answer
    x = 98,577,418,220.32

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.