Home / 57,785.80-86,671.26-18,343.36

Finding the Fourth Proportional to 57,785.80, 86,671.26 and 18,343.36

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Solution

The fourth proportional to 57,785.80, 86,671.26 and 18,343.36 is: 27,512.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,785.80 : 86,671.26 = 18,343.36 : x
  2. Step 2: Convert to fraction form
    57,785.80/86,671.26 = 18,343.36/x
  3. Step 3: Cross multiply
    57,785.80x = 86,671.26 × 18,343.36
  4. Step 4: Simplify right side
    57,785.80x = 1,589,842,123.83
  5. Step 5: Solve for x
    x = 1,589,842,123.83/57,785.80
  6. Step 6: Final answer
    x = 27,512.68

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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.