Home / 57,750.30-86,632.20-18,311.40

Finding the Fourth Proportional to 57,750.30, 86,632.20 and 18,311.40

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Solution

The fourth proportional to 57,750.30, 86,632.20 and 18,311.40 is: 27,469.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,750.30 : 86,632.20 = 18,311.40 : x
  2. Step 2: Convert to fraction form
    57,750.30/86,632.20 = 18,311.40/x
  3. Step 3: Cross multiply
    57,750.30x = 86,632.20 × 18,311.40
  4. Step 4: Simplify right side
    57,750.30x = 1,586,356,867.08
  5. Step 5: Solve for x
    x = 1,586,356,867.08/57,750.30
  6. Step 6: Final answer
    x = 27,469.24

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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.