Home / 91,105.18-125,725.34-50,817.90

Finding the Fourth Proportional to 91,105.18, 125,725.34 and 50,817.90

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Solution

The fourth proportional to 91,105.18, 125,725.34 and 50,817.90 is: 70,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,105.18 : 125,725.34 = 50,817.90 : x
  2. Step 2: Convert to fraction form
    91,105.18/125,725.34 = 50,817.90/x
  3. Step 3: Cross multiply
    91,105.18x = 125,725.34 × 50,817.90
  4. Step 4: Simplify right side
    91,105.18x = 6,389,097,755.59
  5. Step 5: Solve for x
    x = 6,389,097,755.59/91,105.18
  6. Step 6: Final answer
    x = 70,128.81

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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.