Home / 87,489,131.75-120,738,669.74-50,319,422.40

Finding the Fourth Proportional to 87,489,131.75, 120,738,669.74 and 50,319,422.40

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Solution

The fourth proportional to 87,489,131.75, 120,738,669.74 and 50,319,422.40 is: 69,442,912.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489,131.75 : 120,738,669.74 = 50,319,422.40 : x
  2. Step 2: Convert to fraction form
    87,489,131.75/120,738,669.74 = 50,319,422.40/x
  3. Step 3: Cross multiply
    87,489,131.75x = 120,738,669.74 × 50,319,422.40
  4. Step 4: Simplify right side
    87,489,131.75x = 6,075,500,122,718,374
  5. Step 5: Solve for x
    x = 6,075,500,122,718,374/87,489,131.75
  6. Step 6: Final answer
    x = 69,442,912.52

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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.