Home / 81,125.88-111,953.44-45,315.96

Finding the Fourth Proportional to 81,125.88, 111,953.44 and 45,315.96

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Solution

The fourth proportional to 81,125.88, 111,953.44 and 45,315.96 is: 62,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,125.88 : 111,953.44 = 45,315.96 : x
  2. Step 2: Convert to fraction form
    81,125.88/111,953.44 = 45,315.96/x
  3. Step 3: Cross multiply
    81,125.88x = 111,953.44 × 45,315.96
  4. Step 4: Simplify right side
    81,125.88x = 5,073,277,608.90
  5. Step 5: Solve for x
    x = 5,073,277,608.90/81,125.88
  6. Step 6: Final answer
    x = 62,535.87

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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.