Home / 85,831,451.20-128,747,176.80-49,551,745.60

Finding the Fourth Proportional to 85,831,451.20, 128,747,176.80 and 49,551,745.60

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Solution

The fourth proportional to 85,831,451.20, 128,747,176.80 and 49,551,745.60 is: 74,327,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831,451.20 : 128,747,176.80 = 49,551,745.60 : x
  2. Step 2: Convert to fraction form
    85,831,451.20/128,747,176.80 = 49,551,745.60/x
  3. Step 3: Cross multiply
    85,831,451.20x = 128,747,176.80 × 49,551,745.60
  4. Step 4: Simplify right side
    85,831,451.20x = 6,379,647,351,511,822
  5. Step 5: Solve for x
    x = 6,379,647,351,511,822/85,831,451.20
  6. Step 6: Final answer
    x = 74,327,618.40

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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.