Home / 72,162,659.28-108,259,910.28-21,048,678.48

Finding the Fourth Proportional to 72,162,659.28, 108,259,910.28 and 21,048,678.48

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Solution

The fourth proportional to 72,162,659.28, 108,259,910.28 and 21,048,678.48 is: 31,577,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,162,659.28 : 108,259,910.28 = 21,048,678.48 : x
  2. Step 2: Convert to fraction form
    72,162,659.28/108,259,910.28 = 21,048,678.48/x
  3. Step 3: Cross multiply
    72,162,659.28x = 108,259,910.28 × 21,048,678.48
  4. Step 4: Simplify right side
    72,162,659.28x = 2,278,728,043,757,367
  5. Step 5: Solve for x
    x = 2,278,728,043,757,367/72,162,659.28
  6. Step 6: Final answer
    x = 31,577,661.72

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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.