Home / 81,805.30-112,911.36-50,000.86

Finding the Fourth Proportional to 81,805.30, 112,911.36 and 50,000.86

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Solution

The fourth proportional to 81,805.30, 112,911.36 and 50,000.86 is: 69,013.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,805.30 : 112,911.36 = 50,000.86 : x
  2. Step 2: Convert to fraction form
    81,805.30/112,911.36 = 50,000.86/x
  3. Step 3: Cross multiply
    81,805.30x = 112,911.36 × 50,000.86
  4. Step 4: Simplify right side
    81,805.30x = 5,645,665,103.77
  5. Step 5: Solve for x
    x = 5,645,665,103.77/81,805.30
  6. Step 6: Final answer
    x = 69,013.44

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1.5x scale

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.