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Finding the Fourth Proportional to 80,336.34, 120,515.40 and 27,749.88

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Solution

The fourth proportional to 80,336.34, 120,515.40 and 27,749.88 is: 41,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,336.34 : 120,515.40 = 27,749.88 : x
  2. Step 2: Convert to fraction form
    80,336.34/120,515.40 = 27,749.88/x
  3. Step 3: Cross multiply
    80,336.34x = 120,515.40 × 27,749.88
  4. Step 4: Simplify right side
    80,336.34x = 3,344,287,888.15
  5. Step 5: Solve for x
    x = 3,344,287,888.15/80,336.34
  6. Step 6: Final answer
    x = 41,628.58

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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.