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Finding the Third Proportional to 18,637,428 and 39,865,624

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Solution

The third proportional to 18,637,428 and 39,865,624 is: 85,272,923.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637,428 : 39,865,624 = 39,865,624 : x
  2. Step 2: Convert to fraction form
    18,637,428/39,865,624 = 39,865,624/x
  3. Step 3: Cross multiply
    18,637,428x = 39,865,624 × 39,865,624
  4. Step 4: Simplify right side
    18,637,428x = 1,589,267,976,909,376
  5. Step 5: Solve for x
    x = 1,589,267,976,909,376/18,637,428
  6. Step 6: Final answer
    x = 85,272,923.76

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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.