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Finding the Third Proportional to 39,719,987 and 85,710,225

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Solution

The third proportional to 39,719,987 and 85,710,225 is: 184,950,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719,987 : 85,710,225 = 85,710,225 : x
  2. Step 2: Convert to fraction form
    39,719,987/85,710,225 = 85,710,225/x
  3. Step 3: Cross multiply
    39,719,987x = 85,710,225 × 85,710,225
  4. Step 4: Simplify right side
    39,719,987x = 7,346,242,669,550,625
  5. Step 5: Solve for x
    x = 7,346,242,669,550,625/39,719,987
  6. Step 6: Final answer
    x = 184,950,782.32

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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.