Home / 66,428,844.20-99,624,603.90-21,004,562.60

Finding the Fourth Proportional to 66,428,844.20, 99,624,603.90 and 21,004,562.60

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Solution

The fourth proportional to 66,428,844.20, 99,624,603.90 and 21,004,562.60 is: 31,500,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,844.20 : 99,624,603.90 = 21,004,562.60 : x
  2. Step 2: Convert to fraction form
    66,428,844.20/99,624,603.90 = 21,004,562.60/x
  3. Step 3: Cross multiply
    66,428,844.20x = 99,624,603.90 × 21,004,562.60
  4. Step 4: Simplify right side
    66,428,844.20x = 2,092,571,229,117,754.50
  5. Step 5: Solve for x
    x = 2,092,571,229,117,754.50/66,428,844.20
  6. Step 6: Final answer
    x = 31,500,942.92

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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.