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Finding the Fourth Proportional to 36,039.96, 49,737.96 and 20,128.32

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Solution

The fourth proportional to 36,039.96, 49,737.96 and 20,128.32 is: 27,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,039.96 : 49,737.96 = 20,128.32 : x
  2. Step 2: Convert to fraction form
    36,039.96/49,737.96 = 20,128.32/x
  3. Step 3: Cross multiply
    36,039.96x = 49,737.96 × 20,128.32
  4. Step 4: Simplify right side
    36,039.96x = 1,001,141,575.03
  5. Step 5: Solve for x
    x = 1,001,141,575.03/36,039.96
  6. Step 6: Final answer
    x = 27,778.65

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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.