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Finding the Fourth Proportional to 39,752.70, 54,858.60 and 21,848.82

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Solution

The fourth proportional to 39,752.70, 54,858.60 and 21,848.82 is: 30,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,752.70 : 54,858.60 = 21,848.82 : x
  2. Step 2: Convert to fraction form
    39,752.70/54,858.60 = 21,848.82/x
  3. Step 3: Cross multiply
    39,752.70x = 54,858.60 × 21,848.82
  4. Step 4: Simplify right side
    39,752.70x = 1,198,595,676.85
  5. Step 5: Solve for x
    x = 1,198,595,676.85/39,752.70
  6. Step 6: Final answer
    x = 30,151.30

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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.