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Finding the Third Proportional to 18,643,455 and 39,877,479

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Solution

The third proportional to 18,643,455 and 39,877,479 is: 85,296,064.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643,455 : 39,877,479 = 39,877,479 : x
  2. Step 2: Convert to fraction form
    18,643,455/39,877,479 = 39,877,479/x
  3. Step 3: Cross multiply
    18,643,455x = 39,877,479 × 39,877,479
  4. Step 4: Simplify right side
    18,643,455x = 1,590,213,331,395,441
  5. Step 5: Solve for x
    x = 1,590,213,331,395,441/18,643,455
  6. Step 6: Final answer
    x = 85,296,064.03

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.