Home / 57,789.64-86,687.34-18,342.76

Finding the Fourth Proportional to 57,789.64, 86,687.34 and 18,342.76

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Solution

The fourth proportional to 57,789.64, 86,687.34 and 18,342.76 is: 27,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,789.64 : 86,687.34 = 18,342.76 : x
  2. Step 2: Convert to fraction form
    57,789.64/86,687.34 = 18,342.76/x
  3. Step 3: Cross multiply
    57,789.64x = 86,687.34 × 18,342.76
  4. Step 4: Simplify right side
    57,789.64x = 1,590,085,072.66
  5. Step 5: Solve for x
    x = 1,590,085,072.66/57,789.64
  6. Step 6: Final answer
    x = 27,515.05

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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.