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Finding the Fourth Proportional to 79,722.80, 119,598.60 and 32,980.40

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Solution

The fourth proportional to 79,722.80, 119,598.60 and 32,980.40 is: 49,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,722.80 : 119,598.60 = 32,980.40 : x
  2. Step 2: Convert to fraction form
    79,722.80/119,598.60 = 32,980.40/x
  3. Step 3: Cross multiply
    79,722.80x = 119,598.60 × 32,980.40
  4. Step 4: Simplify right side
    79,722.80x = 3,944,409,667.44
  5. Step 5: Solve for x
    x = 3,944,409,667.44/79,722.80
  6. Step 6: Final answer
    x = 49,476.56

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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.