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Finding the Fourth Proportional to 81,659,997.60, 122,489,996.40 and 58,701,746.40

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Solution

The fourth proportional to 81,659,997.60, 122,489,996.40 and 58,701,746.40 is: 88,052,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,659,997.60 : 122,489,996.40 = 58,701,746.40 : x
  2. Step 2: Convert to fraction form
    81,659,997.60/122,489,996.40 = 58,701,746.40/x
  3. Step 3: Cross multiply
    81,659,997.60x = 122,489,996.40 × 58,701,746.40
  4. Step 4: Simplify right side
    81,659,997.60x = 7,190,376,705,209,713
  5. Step 5: Solve for x
    x = 7,190,376,705,209,713/81,659,997.60
  6. Step 6: Final answer
    x = 88,052,619.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.