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Finding the Fourth Proportional to 85,353.12, 117,789.12 and 47,626.56

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Solution

The fourth proportional to 85,353.12, 117,789.12 and 47,626.56 is: 65,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,353.12 : 117,789.12 = 47,626.56 : x
  2. Step 2: Convert to fraction form
    85,353.12/117,789.12 = 47,626.56/x
  3. Step 3: Cross multiply
    85,353.12x = 117,789.12 × 47,626.56
  4. Step 4: Simplify right side
    85,353.12x = 5,609,890,591.03
  5. Step 5: Solve for x
    x = 5,609,890,591.03/85,353.12
  6. Step 6: Final answer
    x = 65,725.67

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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.