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Finding the Fourth Proportional to 29,969.40, 44,867.70 and 20,119.80

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Solution

The fourth proportional to 29,969.40, 44,867.70 and 20,119.80 is: 30,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,969.40 : 44,867.70 = 20,119.80 : x
  2. Step 2: Convert to fraction form
    29,969.40/44,867.70 = 20,119.80/x
  3. Step 3: Cross multiply
    29,969.40x = 44,867.70 × 20,119.80
  4. Step 4: Simplify right side
    29,969.40x = 902,729,150.46
  5. Step 5: Solve for x
    x = 902,729,150.46/29,969.40
  6. Step 6: Final answer
    x = 30,121.70

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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.