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Finding the Fourth Proportional to 81,603,670.35, 122,405,505.53 and 81,603,670.35

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Solution

The fourth proportional to 81,603,670.35, 122,405,505.53 and 81,603,670.35 is: 122,405,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603,670.35 : 122,405,505.53 = 81,603,670.35 : x
  2. Step 2: Convert to fraction form
    81,603,670.35/122,405,505.53 = 81,603,670.35/x
  3. Step 3: Cross multiply
    81,603,670.35x = 122,405,505.53 × 81,603,670.35
  4. Step 4: Simplify right side
    81,603,670.35x = 9,988,738,521,887,204
  5. Step 5: Solve for x
    x = 9,988,738,521,887,204/81,603,670.35
  6. Step 6: Final answer
    x = 122,405,505.53

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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.