Home / 72,380,835.12-108,571,183.56-18,528,060.72

Finding the Fourth Proportional to 72,380,835.12, 108,571,183.56 and 18,528,060.72

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Solution

The fourth proportional to 72,380,835.12, 108,571,183.56 and 18,528,060.72 is: 27,792,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380,835.12 : 108,571,183.56 = 18,528,060.72 : x
  2. Step 2: Convert to fraction form
    72,380,835.12/108,571,183.56 = 18,528,060.72/x
  3. Step 3: Cross multiply
    72,380,835.12x = 108,571,183.56 × 18,528,060.72
  4. Step 4: Simplify right side
    72,380,835.12x = 2,011,613,481,441,945.75
  5. Step 5: Solve for x
    x = 2,011,613,481,441,945.75/72,380,835.12
  6. Step 6: Final answer
    x = 27,792,073.39

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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.