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Finding the Fourth Proportional to 79,441.65, 119,162.34 and 20,277.30

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Solution

The fourth proportional to 79,441.65, 119,162.34 and 20,277.30 is: 30,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,441.65 : 119,162.34 = 20,277.30 : x
  2. Step 2: Convert to fraction form
    79,441.65/119,162.34 = 20,277.30/x
  3. Step 3: Cross multiply
    79,441.65x = 119,162.34 × 20,277.30
  4. Step 4: Simplify right side
    79,441.65x = 2,416,290,516.88
  5. Step 5: Solve for x
    x = 2,416,290,516.88/79,441.65
  6. Step 6: Final answer
    x = 30,415.92

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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.