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Finding the Fourth Proportional to 30,267.65, 45,401.48 and 8,081.11

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Solution

The fourth proportional to 30,267.65, 45,401.48 and 8,081.11 is: 12,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,267.65 : 45,401.48 = 8,081.11 : x
  2. Step 2: Convert to fraction form
    30,267.65/45,401.48 = 8,081.11/x
  3. Step 3: Cross multiply
    30,267.65x = 45,401.48 × 8,081.11
  4. Step 4: Simplify right side
    30,267.65x = 366,894,354.04
  5. Step 5: Solve for x
    x = 366,894,354.04/30,267.65
  6. Step 6: Final answer
    x = 12,121.67

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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.