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Finding the Fourth Proportional to 79,769.80, 119,654.70 and 27,166.60

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Solution

The fourth proportional to 79,769.80, 119,654.70 and 27,166.60 is: 40,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,769.80 : 119,654.70 = 27,166.60 : x
  2. Step 2: Convert to fraction form
    79,769.80/119,654.70 = 27,166.60/x
  3. Step 3: Cross multiply
    79,769.80x = 119,654.70 × 27,166.60
  4. Step 4: Simplify right side
    79,769.80x = 3,250,611,373.02
  5. Step 5: Solve for x
    x = 3,250,611,373.02/79,769.80
  6. Step 6: Final answer
    x = 40,749.90

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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.