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Finding the Fourth Proportional to 36,869.50, 50,879.91 and 20,102.50

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Solution

The fourth proportional to 36,869.50, 50,879.91 and 20,102.50 is: 27,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,869.50 : 50,879.91 = 20,102.50 : x
  2. Step 2: Convert to fraction form
    36,869.50/50,879.91 = 20,102.50/x
  3. Step 3: Cross multiply
    36,869.50x = 50,879.91 × 20,102.50
  4. Step 4: Simplify right side
    36,869.50x = 1,022,813,390.78
  5. Step 5: Solve for x
    x = 1,022,813,390.78/36,869.50
  6. Step 6: Final answer
    x = 27,741.45

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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.