Home / 81,458,813.70-122,188,220.55-30,330,252.90

Finding the Fourth Proportional to 81,458,813.70, 122,188,220.55 and 30,330,252.90

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Solution

The fourth proportional to 81,458,813.70, 122,188,220.55 and 30,330,252.90 is: 45,495,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458,813.70 : 122,188,220.55 = 30,330,252.90 : x
  2. Step 2: Convert to fraction form
    81,458,813.70/122,188,220.55 = 30,330,252.90/x
  3. Step 3: Cross multiply
    81,458,813.70x = 122,188,220.55 × 30,330,252.90
  4. Step 4: Simplify right side
    81,458,813.70x = 3,705,999,630,682,477
  5. Step 5: Solve for x
    x = 3,705,999,630,682,477/81,458,813.70
  6. Step 6: Final answer
    x = 45,495,379.35

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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.