Home / 81,491,505.40-122,237,258.10-75,751,942.60

Finding the Fourth Proportional to 81,491,505.40, 122,237,258.10 and 75,751,942.60

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Solution

The fourth proportional to 81,491,505.40, 122,237,258.10 and 75,751,942.60 is: 113,627,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491,505.40 : 122,237,258.10 = 75,751,942.60 : x
  2. Step 2: Convert to fraction form
    81,491,505.40/122,237,258.10 = 75,751,942.60/x
  3. Step 3: Cross multiply
    81,491,505.40x = 122,237,258.10 × 75,751,942.60
  4. Step 4: Simplify right side
    81,491,505.40x = 9,259,709,759,172,584
  5. Step 5: Solve for x
    x = 9,259,709,759,172,584/81,491,505.40
  6. Step 6: Final answer
    x = 113,627,913.90

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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.