Home / 57,185.76-85,784.40-19,744.80

Finding the Fourth Proportional to 57,185.76, 85,784.40 and 19,744.80

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Solution

The fourth proportional to 57,185.76, 85,784.40 and 19,744.80 is: 29,619.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,185.76 : 85,784.40 = 19,744.80 : x
  2. Step 2: Convert to fraction form
    57,185.76/85,784.40 = 19,744.80/x
  3. Step 3: Cross multiply
    57,185.76x = 85,784.40 × 19,744.80
  4. Step 4: Simplify right side
    57,185.76x = 1,693,795,821.12
  5. Step 5: Solve for x
    x = 1,693,795,821.12/57,185.76
  6. Step 6: Final answer
    x = 29,619.19

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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.