Home / 39,770.48-54,883.30-21,865.79

Finding the Fourth Proportional to 39,770.48, 54,883.30 and 21,865.79

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Solution

The fourth proportional to 39,770.48, 54,883.30 and 21,865.79 is: 30,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.48 : 54,883.30 = 21,865.79 : x
  2. Step 2: Convert to fraction form
    39,770.48/54,883.30 = 21,865.79/x
  3. Step 3: Cross multiply
    39,770.48x = 54,883.30 × 21,865.79
  4. Step 4: Simplify right side
    39,770.48x = 1,200,066,712.31
  5. Step 5: Solve for x
    x = 1,200,066,712.31/39,770.48
  6. Step 6: Final answer
    x = 30,174.81

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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.