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Finding the Fourth Proportional to 39,676.98, 54,750.80 and 21,771.92

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Solution

The fourth proportional to 39,676.98, 54,750.80 and 21,771.92 is: 30,043.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,676.98 : 54,750.80 = 21,771.92 : x
  2. Step 2: Convert to fraction form
    39,676.98/54,750.80 = 21,771.92/x
  3. Step 3: Cross multiply
    39,676.98x = 54,750.80 × 21,771.92
  4. Step 4: Simplify right side
    39,676.98x = 1,192,030,037.54
  5. Step 5: Solve for x
    x = 1,192,030,037.54/39,676.98
  6. Step 6: Final answer
    x = 30,043.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.