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Finding the Fourth Proportional to 80,389.35, 120,601.35 and 27,086.67

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Solution

The fourth proportional to 80,389.35, 120,601.35 and 27,086.67 is: 40,635.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389.35 : 120,601.35 = 27,086.67 : x
  2. Step 2: Convert to fraction form
    80,389.35/120,601.35 = 27,086.67/x
  3. Step 3: Cross multiply
    80,389.35x = 120,601.35 × 27,086.67
  4. Step 4: Simplify right side
    80,389.35x = 3,266,688,969.00
  5. Step 5: Solve for x
    x = 3,266,688,969.00/80,389.35
  6. Step 6: Final answer
    x = 40,635.84

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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.