Home / 81,227.12-111,983.19-56,995.16

Finding the Fourth Proportional to 81,227.12, 111,983.19 and 56,995.16

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Solution

The fourth proportional to 81,227.12, 111,983.19 and 56,995.16 is: 78,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,227.12 : 111,983.19 = 56,995.16 : x
  2. Step 2: Convert to fraction form
    81,227.12/111,983.19 = 56,995.16/x
  3. Step 3: Cross multiply
    81,227.12x = 111,983.19 × 56,995.16
  4. Step 4: Simplify right side
    81,227.12x = 6,382,499,831.36
  5. Step 5: Solve for x
    x = 6,382,499,831.36/81,227.12
  6. Step 6: Final answer
    x = 78,575.97

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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.