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Finding the Fourth Proportional to 80,334.41, 120,492.50 and 20,362.61

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Solution

The fourth proportional to 80,334.41, 120,492.50 and 20,362.61 is: 30,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,334.41 : 120,492.50 = 20,362.61 : x
  2. Step 2: Convert to fraction form
    80,334.41/120,492.50 = 20,362.61/x
  3. Step 3: Cross multiply
    80,334.41x = 120,492.50 × 20,362.61
  4. Step 4: Simplify right side
    80,334.41x = 2,453,541,984.84
  5. Step 5: Solve for x
    x = 2,453,541,984.84/80,334.41
  6. Step 6: Final answer
    x = 30,541.61

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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.