Home / 66,431,961.40-99,647,942.10-40,789,823.80

Finding the Fourth Proportional to 66,431,961.40, 99,647,942.10 and 40,789,823.80

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Solution

The fourth proportional to 66,431,961.40, 99,647,942.10 and 40,789,823.80 is: 61,184,735.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431,961.40 : 99,647,942.10 = 40,789,823.80 : x
  2. Step 2: Convert to fraction form
    66,431,961.40/99,647,942.10 = 40,789,823.80/x
  3. Step 3: Cross multiply
    66,431,961.40x = 99,647,942.10 × 40,789,823.80
  4. Step 4: Simplify right side
    66,431,961.40x = 4,064,622,000,291,601.50
  5. Step 5: Solve for x
    x = 4,064,622,000,291,601.50/66,431,961.40
  6. Step 6: Final answer
    x = 61,184,735.70

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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.