Home / 76,147.75-105,069.31-49,286.53

Finding the Fourth Proportional to 76,147.75, 105,069.31 and 49,286.53

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Solution

The fourth proportional to 76,147.75, 105,069.31 and 49,286.53 is: 68,005.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,147.75 : 105,069.31 = 49,286.53 : x
  2. Step 2: Convert to fraction form
    76,147.75/105,069.31 = 49,286.53/x
  3. Step 3: Cross multiply
    76,147.75x = 105,069.31 × 49,286.53
  4. Step 4: Simplify right side
    76,147.75x = 5,178,501,699.39
  5. Step 5: Solve for x
    x = 5,178,501,699.39/76,147.75
  6. Step 6: Final answer
    x = 68,005.97

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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.