Home / 90,721,500,491.85-125,195,682,932.91-50,076,419,638.78

Finding the Fourth Proportional to 90,721,500,491.85, 125,195,682,932.91 and 50,076,419,638.78

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Solution

The fourth proportional to 90,721,500,491.85, 125,195,682,932.91 and 50,076,419,638.78 is: 69,105,465,865.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721,500,491.85 : 125,195,682,932.91 = 50,076,419,638.78 : x
  2. Step 2: Convert to fraction form
    90,721,500,491.85/125,195,682,932.91 = 50,076,419,638.78/x
  3. Step 3: Cross multiply
    90,721,500,491.85x = 125,195,682,932.91 × 50,076,419,638.78
  4. Step 4: Simplify right side
    90,721,500,491.85x = 6,269,351,555,512,548,720,640
  5. Step 5: Solve for x
    x = 6,269,351,555,512,548,720,640/90,721,500,491.85
  6. Step 6: Final answer
    x = 69,105,465,865.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.