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Finding the Fourth Proportional to 40,379.68, 60,569.78 and 14,084.32

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Solution

The fourth proportional to 40,379.68, 60,569.78 and 14,084.32 is: 21,126.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,379.68 : 60,569.78 = 14,084.32 : x
  2. Step 2: Convert to fraction form
    40,379.68/60,569.78 = 14,084.32/x
  3. Step 3: Cross multiply
    40,379.68x = 60,569.78 × 14,084.32
  4. Step 4: Simplify right side
    40,379.68x = 853,084,163.85
  5. Step 5: Solve for x
    x = 853,084,163.85/40,379.68
  6. Step 6: Final answer
    x = 21,126.57

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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.