Home / 57,385.11-86,091.54-19,939.75

Finding the Fourth Proportional to 57,385.11, 86,091.54 and 19,939.75

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Solution

The fourth proportional to 57,385.11, 86,091.54 and 19,939.75 is: 29,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,385.11 : 86,091.54 = 19,939.75 : x
  2. Step 2: Convert to fraction form
    57,385.11/86,091.54 = 19,939.75/x
  3. Step 3: Cross multiply
    57,385.11x = 86,091.54 × 19,939.75
  4. Step 4: Simplify right side
    57,385.11x = 1,716,643,784.72
  5. Step 5: Solve for x
    x = 1,716,643,784.72/57,385.11
  6. Step 6: Final answer
    x = 29,914.45

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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.