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Finding the Fourth Proportional to 36,559.40, 54,863.40 and 20,764.40

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Solution

The fourth proportional to 36,559.40, 54,863.40 and 20,764.40 is: 31,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,559.40 : 54,863.40 = 20,764.40 : x
  2. Step 2: Convert to fraction form
    36,559.40/54,863.40 = 20,764.40/x
  3. Step 3: Cross multiply
    36,559.40x = 54,863.40 × 20,764.40
  4. Step 4: Simplify right side
    36,559.40x = 1,139,205,582.96
  5. Step 5: Solve for x
    x = 1,139,205,582.96/36,559.40
  6. Step 6: Final answer
    x = 31,160.40

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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.