Home / 57,178.91-85,776.66-17,739.20

Finding the Fourth Proportional to 57,178.91, 85,776.66 and 17,739.20

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Solution

The fourth proportional to 57,178.91, 85,776.66 and 17,739.20 is: 26,611.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,178.91 : 85,776.66 = 17,739.20 : x
  2. Step 2: Convert to fraction form
    57,178.91/85,776.66 = 17,739.20/x
  3. Step 3: Cross multiply
    57,178.91x = 85,776.66 × 17,739.20
  4. Step 4: Simplify right side
    57,178.91x = 1,521,608,898.19
  5. Step 5: Solve for x
    x = 1,521,608,898.19/57,178.91
  6. Step 6: Final answer
    x = 26,611.37

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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.