Home / 76,388.54-105,438.66-49,532.72

Finding the Fourth Proportional to 76,388.54, 105,438.66 and 49,532.72

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Solution

The fourth proportional to 76,388.54, 105,438.66 and 49,532.72 is: 68,369.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,388.54 : 105,438.66 = 49,532.72 : x
  2. Step 2: Convert to fraction form
    76,388.54/105,438.66 = 49,532.72/x
  3. Step 3: Cross multiply
    76,388.54x = 105,438.66 × 49,532.72
  4. Step 4: Simplify right side
    76,388.54x = 5,222,663,622.96
  5. Step 5: Solve for x
    x = 5,222,663,622.96/76,388.54
  6. Step 6: Final answer
    x = 68,369.73

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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.