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Finding the Fourth Proportional to 69,005,378.80, 103,420,150.80 and 36,672,770.80

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Solution

The fourth proportional to 69,005,378.80, 103,420,150.80 and 36,672,770.80 is: 54,962,432.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,005,378.80 : 103,420,150.80 = 36,672,770.80 : x
  2. Step 2: Convert to fraction form
    69,005,378.80/103,420,150.80 = 36,672,770.80/x
  3. Step 3: Cross multiply
    69,005,378.80x = 103,420,150.80 × 36,672,770.80
  4. Step 4: Simplify right side
    69,005,378.80x = 3,792,703,486,389,836
  5. Step 5: Solve for x
    x = 3,792,703,486,389,836/69,005,378.80
  6. Step 6: Final answer
    x = 54,962,432.67

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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.