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Finding the Fourth Proportional to 40,540.65, 60,838.65 and 14,245.39

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Solution

The fourth proportional to 40,540.65, 60,838.65 and 14,245.39 is: 21,377.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,540.65 : 60,838.65 = 14,245.39 : x
  2. Step 2: Convert to fraction form
    40,540.65/60,838.65 = 14,245.39/x
  3. Step 3: Cross multiply
    40,540.65x = 60,838.65 × 14,245.39
  4. Step 4: Simplify right side
    40,540.65x = 866,670,296.32
  5. Step 5: Solve for x
    x = 866,670,296.32/40,540.65
  6. Step 6: Final answer
    x = 21,377.81

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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.