Home / 72,939.27-109,427.36-20,348.72

Finding the Fourth Proportional to 72,939.27, 109,427.36 and 20,348.72

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Solution

The fourth proportional to 72,939.27, 109,427.36 and 20,348.72 is: 30,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939.27 : 109,427.36 = 20,348.72 : x
  2. Step 2: Convert to fraction form
    72,939.27/109,427.36 = 20,348.72/x
  3. Step 3: Cross multiply
    72,939.27x = 109,427.36 × 20,348.72
  4. Step 4: Simplify right side
    72,939.27x = 2,226,706,708.98
  5. Step 5: Solve for x
    x = 2,226,706,708.98/72,939.27
  6. Step 6: Final answer
    x = 30,528.23

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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.