Home / 72,106.12-108,163.32-19,519.84

Finding the Fourth Proportional to 72,106.12, 108,163.32 and 19,519.84

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Solution

The fourth proportional to 72,106.12, 108,163.32 and 19,519.84 is: 29,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,106.12 : 108,163.32 = 19,519.84 : x
  2. Step 2: Convert to fraction form
    72,106.12/108,163.32 = 19,519.84/x
  3. Step 3: Cross multiply
    72,106.12x = 108,163.32 × 19,519.84
  4. Step 4: Simplify right side
    72,106.12x = 2,111,330,700.27
  5. Step 5: Solve for x
    x = 2,111,330,700.27/72,106.12
  6. Step 6: Final answer
    x = 29,280.88

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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.