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Finding the Fourth Proportional to 76,912.76, 115,467.54 and 65,299.76

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Solution

The fourth proportional to 76,912.76, 115,467.54 and 65,299.76 is: 98,033.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.76 : 115,467.54 = 65,299.76 : x
  2. Step 2: Convert to fraction form
    76,912.76/115,467.54 = 65,299.76/x
  3. Step 3: Cross multiply
    76,912.76x = 115,467.54 × 65,299.76
  4. Step 4: Simplify right side
    76,912.76x = 7,540,002,649.79
  5. Step 5: Solve for x
    x = 7,540,002,649.79/76,912.76
  6. Step 6: Final answer
    x = 98,033.18

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1.5x scale

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.