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Finding the Fourth Proportional to 64,647,687.60, 97,018,770.60 and 45,515,811.60

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Solution

The fourth proportional to 64,647,687.60, 97,018,770.60 and 45,515,811.60 is: 68,306,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,647,687.60 : 97,018,770.60 = 45,515,811.60 : x
  2. Step 2: Convert to fraction form
    64,647,687.60/97,018,770.60 = 45,515,811.60/x
  3. Step 3: Cross multiply
    64,647,687.60x = 97,018,770.60 × 45,515,811.60
  4. Step 4: Simplify right side
    64,647,687.60x = 4,415,888,084,293,219
  5. Step 5: Solve for x
    x = 4,415,888,084,293,219/64,647,687.60
  6. Step 6: Final answer
    x = 68,306,976.60

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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.