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Finding the Fourth Proportional to 72,041.57, 107,974.82 and 50,987.75

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Solution

The fourth proportional to 72,041.57, 107,974.82 and 50,987.75 is: 76,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.57 : 107,974.82 = 50,987.75 : x
  2. Step 2: Convert to fraction form
    72,041.57/107,974.82 = 50,987.75/x
  3. Step 3: Cross multiply
    72,041.57x = 107,974.82 × 50,987.75
  4. Step 4: Simplify right side
    72,041.57x = 5,505,392,716.05
  5. Step 5: Solve for x
    x = 5,505,392,716.05/72,041.57
  6. Step 6: Final answer
    x = 76,419.67

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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.