Home / 72,871.45-100,516.61-50,171.03

Finding the Fourth Proportional to 72,871.45, 100,516.61 and 50,171.03

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Solution

The fourth proportional to 72,871.45, 100,516.61 and 50,171.03 is: 69,204.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,871.45 : 100,516.61 = 50,171.03 : x
  2. Step 2: Convert to fraction form
    72,871.45/100,516.61 = 50,171.03/x
  3. Step 3: Cross multiply
    72,871.45x = 100,516.61 × 50,171.03
  4. Step 4: Simplify right side
    72,871.45x = 5,043,021,604.95
  5. Step 5: Solve for x
    x = 5,043,021,604.95/72,871.45
  6. Step 6: Final answer
    x = 69,204.35

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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.