Home / 72,725,474.91-100,363,290.21-39,687,856.41

Finding the Fourth Proportional to 72,725,474.91, 100,363,290.21 and 39,687,856.41

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Solution

The fourth proportional to 72,725,474.91, 100,363,290.21 and 39,687,856.41 is: 54,770,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,474.91 : 100,363,290.21 = 39,687,856.41 : x
  2. Step 2: Convert to fraction form
    72,725,474.91/100,363,290.21 = 39,687,856.41/x
  3. Step 3: Cross multiply
    72,725,474.91x = 100,363,290.21 × 39,687,856.41
  4. Step 4: Simplify right side
    72,725,474.91x = 3,983,203,850,689,638
  5. Step 5: Solve for x
    x = 3,983,203,850,689,638/72,725,474.91
  6. Step 6: Final answer
    x = 54,770,406.87

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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.