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Finding the Third Proportional to 39,169,471 and 81,518,051

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Solution

The third proportional to 39,169,471 and 81,518,051 is: 169,652,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,169,471 : 81,518,051 = 81,518,051 : x
  2. Step 2: Convert to fraction form
    39,169,471/81,518,051 = 81,518,051/x
  3. Step 3: Cross multiply
    39,169,471x = 81,518,051 × 81,518,051
  4. Step 4: Simplify right side
    39,169,471x = 6,645,192,638,838,601
  5. Step 5: Solve for x
    x = 6,645,192,638,838,601/39,169,471
  6. Step 6: Final answer
    x = 169,652,345.80

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.