Home / 66,431,998.80-99,647,998.20-39,110,245.20

Finding the Fourth Proportional to 66,431,998.80, 99,647,998.20 and 39,110,245.20

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Solution

The fourth proportional to 66,431,998.80, 99,647,998.20 and 39,110,245.20 is: 58,665,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431,998.80 : 99,647,998.20 = 39,110,245.20 : x
  2. Step 2: Convert to fraction form
    66,431,998.80/99,647,998.20 = 39,110,245.20/x
  3. Step 3: Cross multiply
    66,431,998.80x = 99,647,998.20 × 39,110,245.20
  4. Step 4: Simplify right side
    66,431,998.80x = 3,897,257,643,291,159
  5. Step 5: Solve for x
    x = 3,897,257,643,291,159/66,431,998.80
  6. Step 6: Final answer
    x = 58,665,367.80

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1.5x scale

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.