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Finding the Fourth Proportional to 80,346.74, 120,503.70 and 30,409.63

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Solution

The fourth proportional to 80,346.74, 120,503.70 and 30,409.63 is: 45,608.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,346.74 : 120,503.70 = 30,409.63 : x
  2. Step 2: Convert to fraction form
    80,346.74/120,503.70 = 30,409.63/x
  3. Step 3: Cross multiply
    80,346.74x = 120,503.70 × 30,409.63
  4. Step 4: Simplify right side
    80,346.74x = 3,664,472,629.37
  5. Step 5: Solve for x
    x = 3,664,472,629.37/80,346.74
  6. Step 6: Final answer
    x = 45,608.23

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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.