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Finding the Third Proportional to 18,828,576 and 40,643,136

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Solution

The third proportional to 18,828,576 and 40,643,136 is: 87,731,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828,576 : 40,643,136 = 40,643,136 : x
  2. Step 2: Convert to fraction form
    18,828,576/40,643,136 = 40,643,136/x
  3. Step 3: Cross multiply
    18,828,576x = 40,643,136 × 40,643,136
  4. Step 4: Simplify right side
    18,828,576x = 1,651,864,503,914,496
  5. Step 5: Solve for x
    x = 1,651,864,503,914,496/18,828,576
  6. Step 6: Final answer
    x = 87,731,780.88

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.