Home / 80,624-120,923.04-57,179.36

Finding the Fourth Proportional to 80,624, 120,923.04 and 57,179.36

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Solution

The fourth proportional to 80,624, 120,923.04 and 57,179.36 is: 85,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,624 : 120,923.04 = 57,179.36 : x
  2. Step 2: Convert to fraction form
    80,624/120,923.04 = 57,179.36/x
  3. Step 3: Cross multiply
    80,624x = 120,923.04 × 57,179.36
  4. Step 4: Simplify right side
    80,624x = 6,914,302,036.45
  5. Step 5: Solve for x
    x = 6,914,302,036.45/80,624
  6. Step 6: Final answer
    x = 85,759.85

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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.