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Finding the Third Proportional to 18,299,904 and 39,612,420

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Solution

The third proportional to 18,299,904 and 39,612,420 is: 85,746,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299,904 : 39,612,420 = 39,612,420 : x
  2. Step 2: Convert to fraction form
    18,299,904/39,612,420 = 39,612,420/x
  3. Step 3: Cross multiply
    18,299,904x = 39,612,420 × 39,612,420
  4. Step 4: Simplify right side
    18,299,904x = 1,569,143,818,256,400
  5. Step 5: Solve for x
    x = 1,569,143,818,256,400/18,299,904
  6. Step 6: Final answer
    x = 85,746,013.65

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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.