Home / 72,423,940.77-99,945,749.93-39,384,907.85

Finding the Fourth Proportional to 72,423,940.77, 99,945,749.93 and 39,384,907.85

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Solution

The fourth proportional to 72,423,940.77, 99,945,749.93 and 39,384,907.85 is: 54,351,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,423,940.77 : 99,945,749.93 = 39,384,907.85 : x
  2. Step 2: Convert to fraction form
    72,423,940.77/99,945,749.93 = 39,384,907.85/x
  3. Step 3: Cross multiply
    72,423,940.77x = 99,945,749.93 × 39,384,907.85
  4. Step 4: Simplify right side
    72,423,940.77x = 3,936,354,151,340,520.50
  5. Step 5: Solve for x
    x = 3,936,354,151,340,520.50/72,423,940.77
  6. Step 6: Final answer
    x = 54,351,559.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.