Home / 81,995.56-112,334.28-78,923.96

Finding the Fourth Proportional to 81,995.56, 112,334.28 and 78,923.96

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Solution

The fourth proportional to 81,995.56, 112,334.28 and 78,923.96 is: 108,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,995.56 : 112,334.28 = 78,923.96 : x
  2. Step 2: Convert to fraction form
    81,995.56/112,334.28 = 78,923.96/x
  3. Step 3: Cross multiply
    81,995.56x = 112,334.28 × 78,923.96
  4. Step 4: Simplify right side
    81,995.56x = 8,865,866,221.35
  5. Step 5: Solve for x
    x = 8,865,866,221.35/81,995.56
  6. Step 6: Final answer
    x = 108,126.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.