Home / 76,610,647.20-114,915,970.80-47,945,200.80

Finding the Fourth Proportional to 76,610,647.20, 114,915,970.80 and 47,945,200.80

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Solution

The fourth proportional to 76,610,647.20, 114,915,970.80 and 47,945,200.80 is: 71,917,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,610,647.20 : 114,915,970.80 = 47,945,200.80 : x
  2. Step 2: Convert to fraction form
    76,610,647.20/114,915,970.80 = 47,945,200.80/x
  3. Step 3: Cross multiply
    76,610,647.20x = 114,915,970.80 × 47,945,200.80
  4. Step 4: Simplify right side
    76,610,647.20x = 5,509,669,295,132,936
  5. Step 5: Solve for x
    x = 5,509,669,295,132,936/76,610,647.20
  6. Step 6: Final answer
    x = 71,917,801.20

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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.