Home / 84,630,640.80-126,945,961.20-57,420,861.60

Finding the Fourth Proportional to 84,630,640.80, 126,945,961.20 and 57,420,861.60

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Solution

The fourth proportional to 84,630,640.80, 126,945,961.20 and 57,420,861.60 is: 86,131,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,630,640.80 : 126,945,961.20 = 57,420,861.60 : x
  2. Step 2: Convert to fraction form
    84,630,640.80/126,945,961.20 = 57,420,861.60/x
  3. Step 3: Cross multiply
    84,630,640.80x = 126,945,961.20 × 57,420,861.60
  4. Step 4: Simplify right side
    84,630,640.80x = 7,289,346,468,744,170
  5. Step 5: Solve for x
    x = 7,289,346,468,744,170/84,630,640.80
  6. Step 6: Final answer
    x = 86,131,292.40

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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.