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Finding the Third Proportional to 18,706,380 and 40,197,492

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Solution

The third proportional to 18,706,380 and 40,197,492 is: 86,378,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706,380 : 40,197,492 = 40,197,492 : x
  2. Step 2: Convert to fraction form
    18,706,380/40,197,492 = 40,197,492/x
  3. Step 3: Cross multiply
    18,706,380x = 40,197,492 × 40,197,492
  4. Step 4: Simplify right side
    18,706,380x = 1,615,838,363,090,064
  5. Step 5: Solve for x
    x = 1,615,838,363,090,064/18,706,380
  6. Step 6: Final answer
    x = 86,378,998.13

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.