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Finding the Third Proportional to 18,814,868 and 39,890,554

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Solution

The third proportional to 18,814,868 and 39,890,554 is: 84,574,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814,868 : 39,890,554 = 39,890,554 : x
  2. Step 2: Convert to fraction form
    18,814,868/39,890,554 = 39,890,554/x
  3. Step 3: Cross multiply
    18,814,868x = 39,890,554 × 39,890,554
  4. Step 4: Simplify right side
    18,814,868x = 1,591,256,298,426,916
  5. Step 5: Solve for x
    x = 1,591,256,298,426,916/18,814,868
  6. Step 6: Final answer
    x = 84,574,406.71

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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.