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Finding the Fourth Proportional to 72,322.80, 108,338.40 and 50,161.20

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Solution

The fourth proportional to 72,322.80, 108,338.40 and 50,161.20 is: 75,140.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,322.80 : 108,338.40 = 50,161.20 : x
  2. Step 2: Convert to fraction form
    72,322.80/108,338.40 = 50,161.20/x
  3. Step 3: Cross multiply
    72,322.80x = 108,338.40 × 50,161.20
  4. Step 4: Simplify right side
    72,322.80x = 5,434,384,150.08
  5. Step 5: Solve for x
    x = 5,434,384,150.08/72,322.80
  6. Step 6: Final answer
    x = 75,140.68

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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.