Home / 81,371.16-122,075.37-31,451.67

Finding the Fourth Proportional to 81,371.16, 122,075.37 and 31,451.67

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Solution

The fourth proportional to 81,371.16, 122,075.37 and 31,451.67 is: 47,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,371.16 : 122,075.37 = 31,451.67 : x
  2. Step 2: Convert to fraction form
    81,371.16/122,075.37 = 31,451.67/x
  3. Step 3: Cross multiply
    81,371.16x = 122,075.37 × 31,451.67
  4. Step 4: Simplify right side
    81,371.16x = 3,839,474,252.37
  5. Step 5: Solve for x
    x = 3,839,474,252.37/81,371.16
  6. Step 6: Final answer
    x = 47,184.71

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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.