Home / 87,078.32-120,169.38-50,778.76

Finding the Fourth Proportional to 87,078.32, 120,169.38 and 50,778.76

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Solution

The fourth proportional to 87,078.32, 120,169.38 and 50,778.76 is: 70,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,078.32 : 120,169.38 = 50,778.76 : x
  2. Step 2: Convert to fraction form
    87,078.32/120,169.38 = 50,778.76/x
  3. Step 3: Cross multiply
    87,078.32x = 120,169.38 × 50,778.76
  4. Step 4: Simplify right side
    87,078.32x = 6,102,051,936.05
  5. Step 5: Solve for x
    x = 6,102,051,936.05/87,078.32
  6. Step 6: Final answer
    x = 70,075.44

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