Home / 77,076.09-106,372.31-48,400.47

Finding the Fourth Proportional to 77,076.09, 106,372.31 and 48,400.47

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Solution

The fourth proportional to 77,076.09, 106,372.31 and 48,400.47 is: 66,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,076.09 : 106,372.31 = 48,400.47 : x
  2. Step 2: Convert to fraction form
    77,076.09/106,372.31 = 48,400.47/x
  3. Step 3: Cross multiply
    77,076.09x = 106,372.31 × 48,400.47
  4. Step 4: Simplify right side
    77,076.09x = 5,148,469,556.98
  5. Step 5: Solve for x
    x = 5,148,469,556.98/77,076.09
  6. Step 6: Final answer
    x = 66,797.23

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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.