Home / 81,000.36-111,785.46-45,190.44

Finding the Fourth Proportional to 81,000.36, 111,785.46 and 45,190.44

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Solution

The fourth proportional to 81,000.36, 111,785.46 and 45,190.44 is: 62,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.36 : 111,785.46 = 45,190.44 : x
  2. Step 2: Convert to fraction form
    81,000.36/111,785.46 = 45,190.44/x
  3. Step 3: Cross multiply
    81,000.36x = 111,785.46 × 45,190.44
  4. Step 4: Simplify right side
    81,000.36x = 5,051,634,123.00
  5. Step 5: Solve for x
    x = 5,051,634,123.00/81,000.36
  6. Step 6: Final answer
    x = 62,365.58

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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.