Home / 57,811.20-86,719.20-18,367.20

Finding the Fourth Proportional to 57,811.20, 86,719.20 and 18,367.20

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Solution

The fourth proportional to 57,811.20, 86,719.20 and 18,367.20 is: 27,551.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.20 : 86,719.20 = 18,367.20 : x
  2. Step 2: Convert to fraction form
    57,811.20/86,719.20 = 18,367.20/x
  3. Step 3: Cross multiply
    57,811.20x = 86,719.20 × 18,367.20
  4. Step 4: Simplify right side
    57,811.20x = 1,592,788,890.24
  5. Step 5: Solve for x
    x = 1,592,788,890.24/57,811.20
  6. Step 6: Final answer
    x = 27,551.56

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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.