Home / 81,675.45-112,914.27-80,927.37

Finding the Fourth Proportional to 81,675.45, 112,914.27 and 80,927.37

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Solution

The fourth proportional to 81,675.45, 112,914.27 and 80,927.37 is: 111,880.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,675.45 : 112,914.27 = 80,927.37 : x
  2. Step 2: Convert to fraction form
    81,675.45/112,914.27 = 80,927.37/x
  3. Step 3: Cross multiply
    81,675.45x = 112,914.27 × 80,927.37
  4. Step 4: Simplify right side
    81,675.45x = 9,137,854,906.57
  5. Step 5: Solve for x
    x = 9,137,854,906.57/81,675.45
  6. Step 6: Final answer
    x = 111,880.07

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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.