Home / 80,385,608.88-120,585,605.94-31,200,309

Finding the Fourth Proportional to 80,385,608.88, 120,585,605.94 and 31,200,309

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Solution

The fourth proportional to 80,385,608.88, 120,585,605.94 and 31,200,309 is: 46,803,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,385,608.88 : 120,585,605.94 = 31,200,309 : x
  2. Step 2: Convert to fraction form
    80,385,608.88/120,585,605.94 = 31,200,309/x
  3. Step 3: Cross multiply
    80,385,608.88x = 120,585,605.94 × 31,200,309
  4. Step 4: Simplify right side
    80,385,608.88x = 3,762,308,166,280,235.50
  5. Step 5: Solve for x
    x = 3,762,308,166,280,235.50/80,385,608.88
  6. Step 6: Final answer
    x = 46,803,255.19

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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.