Home / 81,025.22-111,814.63-45,213.09

Finding the Fourth Proportional to 81,025.22, 111,814.63 and 45,213.09

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Solution

The fourth proportional to 81,025.22, 111,814.63 and 45,213.09 is: 62,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,025.22 : 111,814.63 = 45,213.09 : x
  2. Step 2: Convert to fraction form
    81,025.22/111,814.63 = 45,213.09/x
  3. Step 3: Cross multiply
    81,025.22x = 111,814.63 × 45,213.09
  4. Step 4: Simplify right side
    81,025.22x = 5,055,484,816.47
  5. Step 5: Solve for x
    x = 5,055,484,816.47/81,025.22
  6. Step 6: Final answer
    x = 62,393.97

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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.