Home / 85,535,361.20-128,339,905.80-49,664,231.60

Finding the Fourth Proportional to 85,535,361.20, 128,339,905.80 and 49,664,231.60

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Solution

The fourth proportional to 85,535,361.20, 128,339,905.80 and 49,664,231.60 is: 74,517,751.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535,361.20 : 128,339,905.80 = 49,664,231.60 : x
  2. Step 2: Convert to fraction form
    85,535,361.20/128,339,905.80 = 49,664,231.60/x
  3. Step 3: Cross multiply
    85,535,361.20x = 128,339,905.80 × 49,664,231.60
  4. Step 4: Simplify right side
    85,535,361.20x = 6,373,902,805,173,383
  5. Step 5: Solve for x
    x = 6,373,902,805,173,383/85,535,361.20
  6. Step 6: Final answer
    x = 74,517,751.67

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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.