Home / 66,432,067.20-99,629,438.40-21,007,785.60

Finding the Fourth Proportional to 66,432,067.20, 99,629,438.40 and 21,007,785.60

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Solution

The fourth proportional to 66,432,067.20, 99,629,438.40 and 21,007,785.60 is: 31,505,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432,067.20 : 99,629,438.40 = 21,007,785.60 : x
  2. Step 2: Convert to fraction form
    66,432,067.20/99,629,438.40 = 21,007,785.60/x
  3. Step 3: Cross multiply
    66,432,067.20x = 99,629,438.40 × 21,007,785.60
  4. Step 4: Simplify right side
    66,432,067.20x = 2,092,993,881,355,607.25
  5. Step 5: Solve for x
    x = 2,092,993,881,355,607.25/66,432,067.20
  6. Step 6: Final answer
    x = 31,505,776.80

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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.