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Finding the Fourth Proportional to 81,503.94, 122,250.27 and 28,183.53

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Solution

The fourth proportional to 81,503.94, 122,250.27 and 28,183.53 is: 42,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503.94 : 122,250.27 = 28,183.53 : x
  2. Step 2: Convert to fraction form
    81,503.94/122,250.27 = 28,183.53/x
  3. Step 3: Cross multiply
    81,503.94x = 122,250.27 × 28,183.53
  4. Step 4: Simplify right side
    81,503.94x = 3,445,444,152.05
  5. Step 5: Solve for x
    x = 3,445,444,152.05/81,503.94
  6. Step 6: Final answer
    x = 42,273.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.