Home / 81,458,920.20-122,188,380.30-30,330,359.40

Finding the Fourth Proportional to 81,458,920.20, 122,188,380.30 and 30,330,359.40

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Solution

The fourth proportional to 81,458,920.20, 122,188,380.30 and 30,330,359.40 is: 45,495,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458,920.20 : 122,188,380.30 = 30,330,359.40 : x
  2. Step 2: Convert to fraction form
    81,458,920.20/122,188,380.30 = 30,330,359.40/x
  3. Step 3: Cross multiply
    81,458,920.20x = 122,188,380.30 × 30,330,359.40
  4. Step 4: Simplify right side
    81,458,920.20x = 3,706,017,489,002,879.50
  5. Step 5: Solve for x
    x = 3,706,017,489,002,879.50/81,458,920.20
  6. Step 6: Final answer
    x = 45,495,539.10

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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.