Home / 81,974.20-113,122.86-50,140.76

Finding the Fourth Proportional to 81,974.20, 113,122.86 and 50,140.76

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Solution

The fourth proportional to 81,974.20, 113,122.86 and 50,140.76 is: 69,193.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,974.20 : 113,122.86 = 50,140.76 : x
  2. Step 2: Convert to fraction form
    81,974.20/113,122.86 = 50,140.76/x
  3. Step 3: Cross multiply
    81,974.20x = 113,122.86 × 50,140.76
  4. Step 4: Simplify right side
    81,974.20x = 5,672,066,173.77
  5. Step 5: Solve for x
    x = 5,672,066,173.77/81,974.20
  6. Step 6: Final answer
    x = 69,193.31

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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.