Home / 69,121.92-95,390.40-39,315.84

Finding the Fourth Proportional to 69,121.92, 95,390.40 and 39,315.84

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Solution

The fourth proportional to 69,121.92, 95,390.40 and 39,315.84 is: 54,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,121.92 : 95,390.40 = 39,315.84 : x
  2. Step 2: Convert to fraction form
    69,121.92/95,390.40 = 39,315.84/x
  3. Step 3: Cross multiply
    69,121.92x = 95,390.40 × 39,315.84
  4. Step 4: Simplify right side
    69,121.92x = 3,750,353,703.94
  5. Step 5: Solve for x
    x = 3,750,353,703.94/69,121.92
  6. Step 6: Final answer
    x = 54,257.08

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1.5x scale

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.