Home / 69,132,942.27-103,698,078.53-20,643,650.91

Finding the Fourth Proportional to 69,132,942.27, 103,698,078.53 and 20,643,650.91

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Solution

The fourth proportional to 69,132,942.27, 103,698,078.53 and 20,643,650.91 is: 30,965,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,132,942.27 : 103,698,078.53 = 20,643,650.91 : x
  2. Step 2: Convert to fraction form
    69,132,942.27/103,698,078.53 = 20,643,650.91/x
  3. Step 3: Cross multiply
    69,132,942.27x = 103,698,078.53 × 20,643,650.91
  4. Step 4: Simplify right side
    69,132,942.27x = 2,140,706,933,107,867.75
  5. Step 5: Solve for x
    x = 2,140,706,933,107,867.75/69,132,942.27
  6. Step 6: Final answer
    x = 30,965,077.76

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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.