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Finding the Fourth Proportional to 79,744.80, 119,617.20 and 54,861.60

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Solution

The fourth proportional to 79,744.80, 119,617.20 and 54,861.60 is: 82,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,744.80 : 119,617.20 = 54,861.60 : x
  2. Step 2: Convert to fraction form
    79,744.80/119,617.20 = 54,861.60/x
  3. Step 3: Cross multiply
    79,744.80x = 119,617.20 × 54,861.60
  4. Step 4: Simplify right side
    79,744.80x = 6,562,390,979.52
  5. Step 5: Solve for x
    x = 6,562,390,979.52/79,744.80
  6. Step 6: Final answer
    x = 82,292.40

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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.