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Finding the Fourth Proportional to 79,085.83, 119,178.91 and 71,591.67

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Solution

The fourth proportional to 79,085.83, 119,178.91 and 71,591.67 is: 107,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,085.83 : 119,178.91 = 71,591.67 : x
  2. Step 2: Convert to fraction form
    79,085.83/119,178.91 = 71,591.67/x
  3. Step 3: Cross multiply
    79,085.83x = 119,178.91 × 71,591.67
  4. Step 4: Simplify right side
    79,085.83x = 8,532,217,195.68
  5. Step 5: Solve for x
    x = 8,532,217,195.68/79,085.83
  6. Step 6: Final answer
    x = 107,885.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.