Home / 91,105.08-125,725.14-50,817.78

Finding the Fourth Proportional to 91,105.08, 125,725.14 and 50,817.78

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Solution

The fourth proportional to 91,105.08, 125,725.14 and 50,817.78 is: 70,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,105.08 : 125,725.14 = 50,817.78 : x
  2. Step 2: Convert to fraction form
    91,105.08/125,725.14 = 50,817.78/x
  3. Step 3: Cross multiply
    91,105.08x = 125,725.14 × 50,817.78
  4. Step 4: Simplify right side
    91,105.08x = 6,389,072,504.99
  5. Step 5: Solve for x
    x = 6,389,072,504.99/91,105.08
  6. Step 6: Final answer
    x = 70,128.61

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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.