Home / 76,838.52-115,309.62-30,085.56

Finding the Fourth Proportional to 76,838.52, 115,309.62 and 30,085.56

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Solution

The fourth proportional to 76,838.52, 115,309.62 and 30,085.56 is: 45,148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,838.52 : 115,309.62 = 30,085.56 : x
  2. Step 2: Convert to fraction form
    76,838.52/115,309.62 = 30,085.56/x
  3. Step 3: Cross multiply
    76,838.52x = 115,309.62 × 30,085.56
  4. Step 4: Simplify right side
    76,838.52x = 3,469,154,491.09
  5. Step 5: Solve for x
    x = 3,469,154,491.09/76,838.52
  6. Step 6: Final answer
    x = 45,148.64

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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.