Home / 81,863,606.80-122,795,410.20-71,785,910.80

Finding the Fourth Proportional to 81,863,606.80, 122,795,410.20 and 71,785,910.80

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Solution

The fourth proportional to 81,863,606.80, 122,795,410.20 and 71,785,910.80 is: 107,678,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,863,606.80 : 122,795,410.20 = 71,785,910.80 : x
  2. Step 2: Convert to fraction form
    81,863,606.80/122,795,410.20 = 71,785,910.80/x
  3. Step 3: Cross multiply
    81,863,606.80x = 122,795,410.20 × 71,785,910.80
  4. Step 4: Simplify right side
    81,863,606.80x = 8,814,980,363,266,610
  5. Step 5: Solve for x
    x = 8,814,980,363,266,610/81,863,606.80
  6. Step 6: Final answer
    x = 107,678,866.20

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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.