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Finding the Fourth Proportional to 76,858.39, 115,288.27 and 26,938.41

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Solution

The fourth proportional to 76,858.39, 115,288.27 and 26,938.41 is: 40,407.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,858.39 : 115,288.27 = 26,938.41 : x
  2. Step 2: Convert to fraction form
    76,858.39/115,288.27 = 26,938.41/x
  3. Step 3: Cross multiply
    76,858.39x = 115,288.27 × 26,938.41
  4. Step 4: Simplify right side
    76,858.39x = 3,105,682,861.56
  5. Step 5: Solve for x
    x = 3,105,682,861.56/76,858.39
  6. Step 6: Final answer
    x = 40,407.86

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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.