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Finding the Third Proportional to 39,287,720 and 85,711,856

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Solution

The third proportional to 39,287,720 and 85,711,856 is: 186,992,837.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287,720 : 85,711,856 = 85,711,856 : x
  2. Step 2: Convert to fraction form
    39,287,720/85,711,856 = 85,711,856/x
  3. Step 3: Cross multiply
    39,287,720x = 85,711,856 × 85,711,856
  4. Step 4: Simplify right side
    39,287,720x = 7,346,522,258,964,736
  5. Step 5: Solve for x
    x = 7,346,522,258,964,736/39,287,720
  6. Step 6: Final answer
    x = 186,992,837.94

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.