Home / 57,566.40-86,357.45-20,117.78

Finding the Fourth Proportional to 57,566.40, 86,357.45 and 20,117.78

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Solution

The fourth proportional to 57,566.40, 86,357.45 and 20,117.78 is: 30,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,566.40 : 86,357.45 = 20,117.78 : x
  2. Step 2: Convert to fraction form
    57,566.40/86,357.45 = 20,117.78/x
  3. Step 3: Cross multiply
    57,566.40x = 86,357.45 × 20,117.78
  4. Step 4: Simplify right side
    57,566.40x = 1,737,320,272.54
  5. Step 5: Solve for x
    x = 1,737,320,272.54/57,566.40
  6. Step 6: Final answer
    x = 30,179.42

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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.