Home / 51,383.20-77,113.75-21,821.79

Finding the Fourth Proportional to 51,383.20, 77,113.75 and 21,821.79

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Solution

The fourth proportional to 51,383.20, 77,113.75 and 21,821.79 is: 32,749.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,383.20 : 77,113.75 = 21,821.79 : x
  2. Step 2: Convert to fraction form
    51,383.20/77,113.75 = 21,821.79/x
  3. Step 3: Cross multiply
    51,383.20x = 77,113.75 × 21,821.79
  4. Step 4: Simplify right side
    51,383.20x = 1,682,760,058.61
  5. Step 5: Solve for x
    x = 1,682,760,058.61/51,383.20
  6. Step 6: Final answer
    x = 32,749.23

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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.