Home / 31,631,212.80-47,446,819.20-18,866,131.20

Finding the Fourth Proportional to 31,631,212.80, 47,446,819.20 and 18,866,131.20

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Solution

The fourth proportional to 31,631,212.80, 47,446,819.20 and 18,866,131.20 is: 28,299,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631,212.80 : 47,446,819.20 = 18,866,131.20 : x
  2. Step 2: Convert to fraction form
    31,631,212.80/47,446,819.20 = 18,866,131.20/x
  3. Step 3: Cross multiply
    31,631,212.80x = 47,446,819.20 × 18,866,131.20
  4. Step 4: Simplify right side
    31,631,212.80x = 895,137,916,049,879
  5. Step 5: Solve for x
    x = 895,137,916,049,879/31,631,212.80
  6. Step 6: Final answer
    x = 28,299,196.80

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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.