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Finding the Fourth Proportional to 39,671.63, 54,745.03 and 21,766.27

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Solution

The fourth proportional to 39,671.63, 54,745.03 and 21,766.27 is: 30,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,671.63 : 54,745.03 = 21,766.27 : x
  2. Step 2: Convert to fraction form
    39,671.63/54,745.03 = 21,766.27/x
  3. Step 3: Cross multiply
    39,671.63x = 54,745.03 × 21,766.27
  4. Step 4: Simplify right side
    39,671.63x = 1,191,595,104.14
  5. Step 5: Solve for x
    x = 1,191,595,104.14/39,671.63
  6. Step 6: Final answer
    x = 30,036.45

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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.