Home / 51,138.78-70,571.50-29,922.15

Finding the Fourth Proportional to 51,138.78, 70,571.50 and 29,922.15

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Solution

The fourth proportional to 51,138.78, 70,571.50 and 29,922.15 is: 41,292.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.78 : 70,571.50 = 29,922.15 : x
  2. Step 2: Convert to fraction form
    51,138.78/70,571.50 = 29,922.15/x
  3. Step 3: Cross multiply
    51,138.78x = 70,571.50 × 29,922.15
  4. Step 4: Simplify right side
    51,138.78x = 2,111,651,008.73
  5. Step 5: Solve for x
    x = 2,111,651,008.73/51,138.78
  6. Step 6: Final answer
    x = 41,292.56

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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.