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Finding the Third Proportional to 40,428,405 and 87,666,642

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Solution

The third proportional to 40,428,405 and 87,666,642 is: 190,100,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,428,405 : 87,666,642 = 87,666,642 : x
  2. Step 2: Convert to fraction form
    40,428,405/87,666,642 = 87,666,642/x
  3. Step 3: Cross multiply
    40,428,405x = 87,666,642 × 87,666,642
  4. Step 4: Simplify right side
    40,428,405x = 7,685,440,119,556,164
  5. Step 5: Solve for x
    x = 7,685,440,119,556,164/40,428,405
  6. Step 6: Final answer
    x = 190,100,008.14

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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.