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Finding the Third Proportional to 18,637,431 and 39,865,630

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Solution

The third proportional to 18,637,431 and 39,865,630 is: 85,272,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637,431 : 39,865,630 = 39,865,630 : x
  2. Step 2: Convert to fraction form
    18,637,431/39,865,630 = 39,865,630/x
  3. Step 3: Cross multiply
    18,637,431x = 39,865,630 × 39,865,630
  4. Step 4: Simplify right side
    18,637,431x = 1,589,268,455,296,900
  5. Step 5: Solve for x
    x = 1,589,268,455,296,900/18,637,431
  6. Step 6: Final answer
    x = 85,272,935.70

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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.