Home / 81,716.45-112,762.63-45,912.42

Finding the Fourth Proportional to 81,716.45, 112,762.63 and 45,912.42

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Solution

The fourth proportional to 81,716.45, 112,762.63 and 45,912.42 is: 63,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.45 : 112,762.63 = 45,912.42 : x
  2. Step 2: Convert to fraction form
    81,716.45/112,762.63 = 45,912.42/x
  3. Step 3: Cross multiply
    81,716.45x = 112,762.63 × 45,912.42
  4. Step 4: Simplify right side
    81,716.45x = 5,177,205,286.26
  5. Step 5: Solve for x
    x = 5,177,205,286.26/81,716.45
  6. Step 6: Final answer
    x = 63,355.73

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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.