Home / 81,919,136.70-122,796,036.45-40,915,511.10

Finding the Fourth Proportional to 81,919,136.70, 122,796,036.45 and 40,915,511.10

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Solution

The fourth proportional to 81,919,136.70, 122,796,036.45 and 40,915,511.10 is: 61,331,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,919,136.70 : 122,796,036.45 = 40,915,511.10 : x
  2. Step 2: Convert to fraction form
    81,919,136.70/122,796,036.45 = 40,915,511.10/x
  3. Step 3: Cross multiply
    81,919,136.70x = 122,796,036.45 × 40,915,511.10
  4. Step 4: Simplify right side
    81,919,136.70x = 5,024,262,592,405,980
  5. Step 5: Solve for x
    x = 5,024,262,592,405,980/81,919,136.70
  6. Step 6: Final answer
    x = 61,331,976.81

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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.