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Finding the Fourth Proportional to 40,379.96, 60,582.35 and 20,672.35

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Solution

The fourth proportional to 40,379.96, 60,582.35 and 20,672.35 is: 31,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,379.96 : 60,582.35 = 20,672.35 : x
  2. Step 2: Convert to fraction form
    40,379.96/60,582.35 = 20,672.35/x
  3. Step 3: Cross multiply
    40,379.96x = 60,582.35 × 20,672.35
  4. Step 4: Simplify right side
    40,379.96x = 1,252,379,543.02
  5. Step 5: Solve for x
    x = 1,252,379,543.02/40,379.96
  6. Step 6: Final answer
    x = 31,014.88

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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.