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Finding the Fourth Proportional to 76,255.63, 114,383.44 and 20,851.63

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Solution

The fourth proportional to 76,255.63, 114,383.44 and 20,851.63 is: 31,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,255.63 : 114,383.44 = 20,851.63 : x
  2. Step 2: Convert to fraction form
    76,255.63/114,383.44 = 20,851.63/x
  3. Step 3: Cross multiply
    76,255.63x = 114,383.44 × 20,851.63
  4. Step 4: Simplify right side
    76,255.63x = 2,385,081,169.01
  5. Step 5: Solve for x
    x = 2,385,081,169.01/76,255.63
  6. Step 6: Final answer
    x = 31,277.44

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Similar ratio
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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.