Home / 71,912.77-107,831.14-31,914.37

Finding the Fourth Proportional to 71,912.77, 107,831.14 and 31,914.37

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Solution

The fourth proportional to 71,912.77, 107,831.14 and 31,914.37 is: 47,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.77 : 107,831.14 = 31,914.37 : x
  2. Step 2: Convert to fraction form
    71,912.77/107,831.14 = 31,914.37/x
  3. Step 3: Cross multiply
    71,912.77x = 107,831.14 × 31,914.37
  4. Step 4: Simplify right side
    71,912.77x = 3,441,362,899.48
  5. Step 5: Solve for x
    x = 3,441,362,899.48/71,912.77
  6. Step 6: Final answer
    x = 47,854.68

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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.