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Finding the Fourth Proportional to 40,559.21, 60,834.02 and 12,479.21

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Solution

The fourth proportional to 40,559.21, 60,834.02 and 12,479.21 is: 18,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,559.21 : 60,834.02 = 12,479.21 : x
  2. Step 2: Convert to fraction form
    40,559.21/60,834.02 = 12,479.21/x
  3. Step 3: Cross multiply
    40,559.21x = 60,834.02 × 12,479.21
  4. Step 4: Simplify right side
    40,559.21x = 759,160,144.16
  5. Step 5: Solve for x
    x = 759,160,144.16/40,559.21
  6. Step 6: Final answer
    x = 18,717.33

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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.