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Finding the Fourth Proportional to 40,591.80, 60,912 and 14,318.64

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Solution

The fourth proportional to 40,591.80, 60,912 and 14,318.64 is: 21,486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,591.80 : 60,912 = 14,318.64 : x
  2. Step 2: Convert to fraction form
    40,591.80/60,912 = 14,318.64/x
  3. Step 3: Cross multiply
    40,591.80x = 60,912 × 14,318.64
  4. Step 4: Simplify right side
    40,591.80x = 872,176,999.68
  5. Step 5: Solve for x
    x = 872,176,999.68/40,591.80
  6. Step 6: Final answer
    x = 21,486.53

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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.