Home / 81,607,010.40-122,410,515.60-70,978,190.40

Finding the Fourth Proportional to 81,607,010.40, 122,410,515.60 and 70,978,190.40

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Solution

The fourth proportional to 81,607,010.40, 122,410,515.60 and 70,978,190.40 is: 106,467,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,010.40 : 122,410,515.60 = 70,978,190.40 : x
  2. Step 2: Convert to fraction form
    81,607,010.40/122,410,515.60 = 70,978,190.40/x
  3. Step 3: Cross multiply
    81,607,010.40x = 122,410,515.60 × 70,978,190.40
  4. Step 4: Simplify right side
    81,607,010.40x = 8,688,476,883,218,971
  5. Step 5: Solve for x
    x = 8,688,476,883,218,971/81,607,010.40
  6. Step 6: Final answer
    x = 106,467,285.60

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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.