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Finding the Fourth Proportional to 66,804,012.80, 100,206,019.20 and 41,294,844.80

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Solution

The fourth proportional to 66,804,012.80, 100,206,019.20 and 41,294,844.80 is: 61,942,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,804,012.80 : 100,206,019.20 = 41,294,844.80 : x
  2. Step 2: Convert to fraction form
    66,804,012.80/100,206,019.20 = 41,294,844.80/x
  3. Step 3: Cross multiply
    66,804,012.80x = 100,206,019.20 × 41,294,844.80
  4. Step 4: Simplify right side
    66,804,012.80x = 4,137,992,010,889,820
  5. Step 5: Solve for x
    x = 4,137,992,010,889,820/66,804,012.80
  6. Step 6: Final answer
    x = 61,942,267.20

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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.