Home / 66,698,765.69-100,057,711.19-20,644,679.12

Finding the Fourth Proportional to 66,698,765.69, 100,057,711.19 and 20,644,679.12

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Solution

The fourth proportional to 66,698,765.69, 100,057,711.19 and 20,644,679.12 is: 30,969,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,698,765.69 : 100,057,711.19 = 20,644,679.12 : x
  2. Step 2: Convert to fraction form
    66,698,765.69/100,057,711.19 = 20,644,679.12/x
  3. Step 3: Cross multiply
    66,698,765.69x = 100,057,711.19 × 20,644,679.12
  4. Step 4: Simplify right side
    66,698,765.69x = 2,065,659,340,999,183.50
  5. Step 5: Solve for x
    x = 2,065,659,340,999,183.50/66,698,765.69
  6. Step 6: Final answer
    x = 30,969,978.52

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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.