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Finding the Fourth Proportional to 72,759.56, 100,322.31 and 49,800.45

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Solution

The fourth proportional to 72,759.56, 100,322.31 and 49,800.45 is: 68,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,759.56 : 100,322.31 = 49,800.45 : x
  2. Step 2: Convert to fraction form
    72,759.56/100,322.31 = 49,800.45/x
  3. Step 3: Cross multiply
    72,759.56x = 100,322.31 × 49,800.45
  4. Step 4: Simplify right side
    72,759.56x = 4,996,096,183.04
  5. Step 5: Solve for x
    x = 4,996,096,183.04/72,759.56
  6. Step 6: Final answer
    x = 68,665.84

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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.