Home / 71,800.26-99,086.45-39,538.21

Finding the Fourth Proportional to 71,800.26, 99,086.45 and 39,538.21

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Solution

The fourth proportional to 71,800.26, 99,086.45 and 39,538.21 is: 54,563.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,800.26 : 99,086.45 = 39,538.21 : x
  2. Step 2: Convert to fraction form
    71,800.26/99,086.45 = 39,538.21/x
  3. Step 3: Cross multiply
    71,800.26x = 99,086.45 × 39,538.21
  4. Step 4: Simplify right side
    71,800.26x = 3,917,700,868.25
  5. Step 5: Solve for x
    x = 3,917,700,868.25/71,800.26
  6. Step 6: Final answer
    x = 54,563.88

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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.