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Finding the Third Proportional to 18,617,890 and 39,489,476

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Solution

The third proportional to 18,617,890 and 39,489,476 is: 83,759,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617,890 : 39,489,476 = 39,489,476 : x
  2. Step 2: Convert to fraction form
    18,617,890/39,489,476 = 39,489,476/x
  3. Step 3: Cross multiply
    18,617,890x = 39,489,476 × 39,489,476
  4. Step 4: Simplify right side
    18,617,890x = 1,559,418,714,754,576
  5. Step 5: Solve for x
    x = 1,559,418,714,754,576/18,617,890
  6. Step 6: Final answer
    x = 83,759,153.95

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.