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Finding the Fourth Proportional to 53,808, 80,828.76 and 45,504.68

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Solution

The fourth proportional to 53,808, 80,828.76 and 45,504.68 is: 68,355.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,808 : 80,828.76 = 45,504.68 : x
  2. Step 2: Convert to fraction form
    53,808/80,828.76 = 45,504.68/x
  3. Step 3: Cross multiply
    53,808x = 80,828.76 × 45,504.68
  4. Step 4: Simplify right side
    53,808x = 3,678,086,858.60
  5. Step 5: Solve for x
    x = 3,678,086,858.60/53,808
  6. Step 6: Final answer
    x = 68,355.76

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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.