Home / 82,086.35-123,129.54-19,756.85

Finding the Fourth Proportional to 82,086.35, 123,129.54 and 19,756.85

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Solution

The fourth proportional to 82,086.35, 123,129.54 and 19,756.85 is: 29,635.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,086.35 : 123,129.54 = 19,756.85 : x
  2. Step 2: Convert to fraction form
    82,086.35/123,129.54 = 19,756.85/x
  3. Step 3: Cross multiply
    82,086.35x = 123,129.54 × 19,756.85
  4. Step 4: Simplify right side
    82,086.35x = 2,432,651,852.35
  5. Step 5: Solve for x
    x = 2,432,651,852.35/82,086.35
  6. Step 6: Final answer
    x = 29,635.28

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1.5x scale

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.