Home / 83,408.40-125,261.88-76,733.04

Finding the Fourth Proportional to 83,408.40, 125,261.88 and 76,733.04

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Solution

The fourth proportional to 83,408.40, 125,261.88 and 76,733.04 is: 115,236.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,408.40 : 125,261.88 = 76,733.04 : x
  2. Step 2: Convert to fraction form
    83,408.40/125,261.88 = 76,733.04/x
  3. Step 3: Cross multiply
    83,408.40x = 125,261.88 × 76,733.04
  4. Step 4: Simplify right side
    83,408.40x = 9,611,724,848.52
  5. Step 5: Solve for x
    x = 9,611,724,848.52/83,408.40
  6. Step 6: Final answer
    x = 115,236.89

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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.