Home / 82,779,321.12-124,188,213.64-28,192,380.68

Finding the Fourth Proportional to 82,779,321.12, 124,188,213.64 and 28,192,380.68

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Solution

The fourth proportional to 82,779,321.12, 124,188,213.64 and 28,192,380.68 is: 42,295,120.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,779,321.12 : 124,188,213.64 = 28,192,380.68 : x
  2. Step 2: Convert to fraction form
    82,779,321.12/124,188,213.64 = 28,192,380.68/x
  3. Step 3: Cross multiply
    82,779,321.12x = 124,188,213.64 × 28,192,380.68
  4. Step 4: Simplify right side
    82,779,321.12x = 3,501,161,394,216,626.50
  5. Step 5: Solve for x
    x = 3,501,161,394,216,626.50/82,779,321.12
  6. Step 6: Final answer
    x = 42,295,120.89

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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.