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Finding the Fourth Proportional to 51,786.72, 71,489.72 and 39,045.04

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Solution

The fourth proportional to 51,786.72, 71,489.72 and 39,045.04 is: 53,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,786.72 : 71,489.72 = 39,045.04 : x
  2. Step 2: Convert to fraction form
    51,786.72/71,489.72 = 39,045.04/x
  3. Step 3: Cross multiply
    51,786.72x = 71,489.72 × 39,045.04
  4. Step 4: Simplify right side
    51,786.72x = 2,791,318,976.99
  5. Step 5: Solve for x
    x = 2,791,318,976.99/51,786.72
  6. Step 6: Final answer
    x = 53,900.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.