Home / 72,725,912.14-100,363,878.24-39,688,289.28

Finding the Fourth Proportional to 72,725,912.14, 100,363,878.24 and 39,688,289.28

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Solution

The fourth proportional to 72,725,912.14, 100,363,878.24 and 39,688,289.28 is: 54,770,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,912.14 : 100,363,878.24 = 39,688,289.28 : x
  2. Step 2: Convert to fraction form
    72,725,912.14/100,363,878.24 = 39,688,289.28/x
  3. Step 3: Cross multiply
    72,725,912.14x = 100,363,878.24 × 39,688,289.28
  4. Step 4: Simplify right side
    72,725,912.14x = 3,983,270,632,250,777
  5. Step 5: Solve for x
    x = 3,983,270,632,250,777/72,725,912.14
  6. Step 6: Final answer
    x = 54,770,995.85

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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.