Home / 81,905.82-112,992.24-59,208.84

Finding the Fourth Proportional to 81,905.82, 112,992.24 and 59,208.84

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Solution

The fourth proportional to 81,905.82, 112,992.24 and 59,208.84 is: 81,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.82 : 112,992.24 = 59,208.84 : x
  2. Step 2: Convert to fraction form
    81,905.82/112,992.24 = 59,208.84/x
  3. Step 3: Cross multiply
    81,905.82x = 112,992.24 × 59,208.84
  4. Step 4: Simplify right side
    81,905.82x = 6,690,139,459.40
  5. Step 5: Solve for x
    x = 6,690,139,459.40/81,905.82
  6. Step 6: Final answer
    x = 81,680.88

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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.