Home / 76,814.16-115,211.52-30,099.84

Finding the Fourth Proportional to 76,814.16, 115,211.52 and 30,099.84

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Solution

The fourth proportional to 76,814.16, 115,211.52 and 30,099.84 is: 45,145.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,814.16 : 115,211.52 = 30,099.84 : x
  2. Step 2: Convert to fraction form
    76,814.16/115,211.52 = 30,099.84/x
  3. Step 3: Cross multiply
    76,814.16x = 115,211.52 × 30,099.84
  4. Step 4: Simplify right side
    76,814.16x = 3,467,848,318.16
  5. Step 5: Solve for x
    x = 3,467,848,318.16/76,814.16
  6. Step 6: Final answer
    x = 45,145.95

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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.