Home / 80,631,142.50-120,947,156.78-20,046,868.50

Finding the Fourth Proportional to 80,631,142.50, 120,947,156.78 and 20,046,868.50

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Solution

The fourth proportional to 80,631,142.50, 120,947,156.78 and 20,046,868.50 is: 30,070,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631,142.50 : 120,947,156.78 = 20,046,868.50 : x
  2. Step 2: Convert to fraction form
    80,631,142.50/120,947,156.78 = 20,046,868.50/x
  3. Step 3: Cross multiply
    80,631,142.50x = 120,947,156.78 × 20,046,868.50
  4. Step 4: Simplify right side
    80,631,142.50x = 2,424,611,747,770,861
  5. Step 5: Solve for x
    x = 2,424,611,747,770,861/80,631,142.50
  6. Step 6: Final answer
    x = 30,070,412.90

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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.