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Finding the Fourth Proportional to 91,157.74, 125,804 and 50,879.35

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Solution

The fourth proportional to 91,157.74, 125,804 and 50,879.35 is: 70,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,157.74 : 125,804 = 50,879.35 : x
  2. Step 2: Convert to fraction form
    91,157.74/125,804 = 50,879.35/x
  3. Step 3: Cross multiply
    91,157.74x = 125,804 × 50,879.35
  4. Step 4: Simplify right side
    91,157.74x = 6,400,825,747.40
  5. Step 5: Solve for x
    x = 6,400,825,747.40/91,157.74
  6. Step 6: Final answer
    x = 70,217.03

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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.