Home / 81,907.24-122,787.72-31,975.72

Finding the Fourth Proportional to 81,907.24, 122,787.72 and 31,975.72

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Solution

The fourth proportional to 81,907.24, 122,787.72 and 31,975.72 is: 47,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,907.24 : 122,787.72 = 31,975.72 : x
  2. Step 2: Convert to fraction form
    81,907.24/122,787.72 = 31,975.72/x
  3. Step 3: Cross multiply
    81,907.24x = 122,787.72 × 31,975.72
  4. Step 4: Simplify right side
    81,907.24x = 3,926,225,754.16
  5. Step 5: Solve for x
    x = 3,926,225,754.16/81,907.24
  6. Step 6: Final answer
    x = 47,935.03

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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.