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Finding the Third Proportional to 77,862,879 and 168,036,687

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Solution

The third proportional to 77,862,879 and 168,036,687 is: 362,641,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,862,879 : 168,036,687 = 168,036,687 : x
  2. Step 2: Convert to fraction form
    77,862,879/168,036,687 = 168,036,687/x
  3. Step 3: Cross multiply
    77,862,879x = 168,036,687 × 168,036,687
  4. Step 4: Simplify right side
    77,862,879x = 28,236,328,177,935,968
  5. Step 5: Solve for x
    x = 28,236,328,177,935,968/77,862,879
  6. Step 6: Final answer
    x = 362,641,717.60

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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.