Home / 86,415.28-129,633.72-33,817.96

Finding the Fourth Proportional to 86,415.28, 129,633.72 and 33,817.96

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Solution

The fourth proportional to 86,415.28, 129,633.72 and 33,817.96 is: 50,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,415.28 : 129,633.72 = 33,817.96 : x
  2. Step 2: Convert to fraction form
    86,415.28/129,633.72 = 33,817.96/x
  3. Step 3: Cross multiply
    86,415.28x = 129,633.72 × 33,817.96
  4. Step 4: Simplify right side
    86,415.28x = 4,383,947,957.61
  5. Step 5: Solve for x
    x = 4,383,947,957.61/86,415.28
  6. Step 6: Final answer
    x = 50,731.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.