Home / 81,173.61-111,947.05-50,961.74

Finding the Fourth Proportional to 81,173.61, 111,947.05 and 50,961.74

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Solution

The fourth proportional to 81,173.61, 111,947.05 and 50,961.74 is: 70,281.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.61 : 111,947.05 = 50,961.74 : x
  2. Step 2: Convert to fraction form
    81,173.61/111,947.05 = 50,961.74/x
  3. Step 3: Cross multiply
    81,173.61x = 111,947.05 × 50,961.74
  4. Step 4: Simplify right side
    81,173.61x = 5,705,016,201.06
  5. Step 5: Solve for x
    x = 5,705,016,201.06/81,173.61
  6. Step 6: Final answer
    x = 70,281.67

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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.