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Finding the Fourth Proportional to 68,289.85, 102,440.85 and 26,168.23

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Solution

The fourth proportional to 68,289.85, 102,440.85 and 26,168.23 is: 39,254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,289.85 : 102,440.85 = 26,168.23 : x
  2. Step 2: Convert to fraction form
    68,289.85/102,440.85 = 26,168.23/x
  3. Step 3: Cross multiply
    68,289.85x = 102,440.85 × 26,168.23
  4. Step 4: Simplify right side
    68,289.85x = 2,680,695,724.20
  5. Step 5: Solve for x
    x = 2,680,695,724.20/68,289.85
  6. Step 6: Final answer
    x = 39,254.67

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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.