Home / 57,679.05-86,511.15-18,240.15

Finding the Fourth Proportional to 57,679.05, 86,511.15 and 18,240.15

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Solution

The fourth proportional to 57,679.05, 86,511.15 and 18,240.15 is: 27,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,679.05 : 86,511.15 = 18,240.15 : x
  2. Step 2: Convert to fraction form
    57,679.05/86,511.15 = 18,240.15/x
  3. Step 3: Cross multiply
    57,679.05x = 86,511.15 × 18,240.15
  4. Step 4: Simplify right side
    57,679.05x = 1,577,976,352.67
  5. Step 5: Solve for x
    x = 1,577,976,352.67/57,679.05
  6. Step 6: Final answer
    x = 27,357.88

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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.