Home / 76,678,785.92-115,018,181.38-19,171,057.09

Finding the Fourth Proportional to 76,678,785.92, 115,018,181.38 and 19,171,057.09

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Solution

The fourth proportional to 76,678,785.92, 115,018,181.38 and 19,171,057.09 is: 28,756,586.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678,785.92 : 115,018,181.38 = 19,171,057.09 : x
  2. Step 2: Convert to fraction form
    76,678,785.92/115,018,181.38 = 19,171,057.09/x
  3. Step 3: Cross multiply
    76,678,785.92x = 115,018,181.38 × 19,171,057.09
  4. Step 4: Simplify right side
    76,678,785.92x = 2,205,020,121,404,314
  5. Step 5: Solve for x
    x = 2,205,020,121,404,314/76,678,785.92
  6. Step 6: Final answer
    x = 28,756,586.26

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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.