Home / 68,861.76-95,021.40-38,640.84

Finding the Fourth Proportional to 68,861.76, 95,021.40 and 38,640.84

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Solution

The fourth proportional to 68,861.76, 95,021.40 and 38,640.84 is: 53,319.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,861.76 : 95,021.40 = 38,640.84 : x
  2. Step 2: Convert to fraction form
    68,861.76/95,021.40 = 38,640.84/x
  3. Step 3: Cross multiply
    68,861.76x = 95,021.40 × 38,640.84
  4. Step 4: Simplify right side
    68,861.76x = 3,671,706,713.98
  5. Step 5: Solve for x
    x = 3,671,706,713.98/68,861.76
  6. Step 6: Final answer
    x = 53,319.97

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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.