Home / 72,179,769.16-108,276,016.09-20,364,825.70

Finding the Fourth Proportional to 72,179,769.16, 108,276,016.09 and 20,364,825.70

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Solution

The fourth proportional to 72,179,769.16, 108,276,016.09 and 20,364,825.70 is: 30,549,033.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179,769.16 : 108,276,016.09 = 20,364,825.70 : x
  2. Step 2: Convert to fraction form
    72,179,769.16/108,276,016.09 = 20,364,825.70/x
  3. Step 3: Cross multiply
    72,179,769.16x = 108,276,016.09 × 20,364,825.70
  4. Step 4: Simplify right side
    72,179,769.16x = 2,205,022,195,163,245.50
  5. Step 5: Solve for x
    x = 2,205,022,195,163,245.50/72,179,769.16
  6. Step 6: Final answer
    x = 30,549,033.63

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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.