Home / 72,914.75-100,622.36-39,380.75

Finding the Fourth Proportional to 72,914.75, 100,622.36 and 39,380.75

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Solution

The fourth proportional to 72,914.75, 100,622.36 and 39,380.75 is: 54,345.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,914.75 : 100,622.36 = 39,380.75 : x
  2. Step 2: Convert to fraction form
    72,914.75/100,622.36 = 39,380.75/x
  3. Step 3: Cross multiply
    72,914.75x = 100,622.36 × 39,380.75
  4. Step 4: Simplify right side
    72,914.75x = 3,962,584,003.57
  5. Step 5: Solve for x
    x = 3,962,584,003.57/72,914.75
  6. Step 6: Final answer
    x = 54,345.44

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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.