Home / 81,156.21-111,993.46-45,346.49

Finding the Fourth Proportional to 81,156.21, 111,993.46 and 45,346.49

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Solution

The fourth proportional to 81,156.21, 111,993.46 and 45,346.49 is: 62,576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.21 : 111,993.46 = 45,346.49 : x
  2. Step 2: Convert to fraction form
    81,156.21/111,993.46 = 45,346.49/x
  3. Step 3: Cross multiply
    81,156.21x = 111,993.46 × 45,346.49
  4. Step 4: Simplify right side
    81,156.21x = 5,078,510,313.96
  5. Step 5: Solve for x
    x = 5,078,510,313.96/81,156.21
  6. Step 6: Final answer
    x = 62,576.98

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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.