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Finding the Fourth Proportional to 91,245.86, 125,004.73 and 87,834.49

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Solution

The fourth proportional to 91,245.86, 125,004.73 and 87,834.49 is: 120,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,245.86 : 125,004.73 = 87,834.49 : x
  2. Step 2: Convert to fraction form
    91,245.86/125,004.73 = 87,834.49/x
  3. Step 3: Cross multiply
    91,245.86x = 125,004.73 × 87,834.49
  4. Step 4: Simplify right side
    91,245.86x = 10,979,726,707.14
  5. Step 5: Solve for x
    x = 10,979,726,707.14/91,245.86
  6. Step 6: Final answer
    x = 120,331.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.