Home / 71,631.46-107,433.29-68,075.31

Finding the Fourth Proportional to 71,631.46, 107,433.29 and 68,075.31

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Solution

The fourth proportional to 71,631.46, 107,433.29 and 68,075.31 is: 102,099.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,631.46 : 107,433.29 = 68,075.31 : x
  2. Step 2: Convert to fraction form
    71,631.46/107,433.29 = 68,075.31/x
  3. Step 3: Cross multiply
    71,631.46x = 107,433.29 × 68,075.31
  4. Step 4: Simplify right side
    71,631.46x = 7,313,554,288.38
  5. Step 5: Solve for x
    x = 7,313,554,288.38/71,631.46
  6. Step 6: Final answer
    x = 102,099.75

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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.