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Finding the Third Proportional to 39,698,820 and 85,992,898

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Solution

The third proportional to 39,698,820 and 85,992,898 is: 186,271,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698,820 : 85,992,898 = 85,992,898 : x
  2. Step 2: Convert to fraction form
    39,698,820/85,992,898 = 85,992,898/x
  3. Step 3: Cross multiply
    39,698,820x = 85,992,898 × 85,992,898
  4. Step 4: Simplify right side
    39,698,820x = 7,394,778,506,438,404
  5. Step 5: Solve for x
    x = 7,394,778,506,438,404/39,698,820
  6. Step 6: Final answer
    x = 186,271,997.67

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.