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Finding the Fourth Proportional to 72,615.40, 108,857.44 and 50,439.20

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Solution

The fourth proportional to 72,615.40, 108,857.44 and 50,439.20 is: 75,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,615.40 : 108,857.44 = 50,439.20 : x
  2. Step 2: Convert to fraction form
    72,615.40/108,857.44 = 50,439.20/x
  3. Step 3: Cross multiply
    72,615.40x = 108,857.44 × 50,439.20
  4. Step 4: Simplify right side
    72,615.40x = 5,490,682,187.65
  5. Step 5: Solve for x
    x = 5,490,682,187.65/72,615.40
  6. Step 6: Final answer
    x = 75,613.19

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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.