Home / 72,729.63-109,082.07-20,126.79

Finding the Fourth Proportional to 72,729.63, 109,082.07 and 20,126.79

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Solution

The fourth proportional to 72,729.63, 109,082.07 and 20,126.79 is: 30,186.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.63 : 109,082.07 = 20,126.79 : x
  2. Step 2: Convert to fraction form
    72,729.63/109,082.07 = 20,126.79/x
  3. Step 3: Cross multiply
    72,729.63x = 109,082.07 × 20,126.79
  4. Step 4: Simplify right side
    72,729.63x = 2,195,471,915.66
  5. Step 5: Solve for x
    x = 2,195,471,915.66/72,729.63
  6. Step 6: Final answer
    x = 30,186.76

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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.