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Finding the Fourth Proportional to 49,680, 74,505.42 and 14,611.32

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Solution

The fourth proportional to 49,680, 74,505.42 and 14,611.32 is: 21,912.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,680 : 74,505.42 = 14,611.32 : x
  2. Step 2: Convert to fraction form
    49,680/74,505.42 = 14,611.32/x
  3. Step 3: Cross multiply
    49,680x = 74,505.42 × 14,611.32
  4. Step 4: Simplify right side
    49,680x = 1,088,622,533.35
  5. Step 5: Solve for x
    x = 1,088,622,533.35/49,680
  6. Step 6: Final answer
    x = 21,912.69

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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.