Home / 80,865.12-111,575.28-49,027.44

Finding the Fourth Proportional to 80,865.12, 111,575.28 and 49,027.44

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Solution

The fourth proportional to 80,865.12, 111,575.28 and 49,027.44 is: 67,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.12 : 111,575.28 = 49,027.44 : x
  2. Step 2: Convert to fraction form
    80,865.12/111,575.28 = 49,027.44/x
  3. Step 3: Cross multiply
    80,865.12x = 111,575.28 × 49,027.44
  4. Step 4: Simplify right side
    80,865.12x = 5,470,250,345.68
  5. Step 5: Solve for x
    x = 5,470,250,345.68/80,865.12
  6. Step 6: Final answer
    x = 67,646.60

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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.