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Finding the Fourth Proportional to 47,369.72, 71,079.48 and 19,310.51

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Solution

The fourth proportional to 47,369.72, 71,079.48 and 19,310.51 is: 28,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,369.72 : 71,079.48 = 19,310.51 : x
  2. Step 2: Convert to fraction form
    47,369.72/71,079.48 = 19,310.51/x
  3. Step 3: Cross multiply
    47,369.72x = 71,079.48 × 19,310.51
  4. Step 4: Simplify right side
    47,369.72x = 1,372,580,653.94
  5. Step 5: Solve for x
    x = 1,372,580,653.94/47,369.72
  6. Step 6: Final answer
    x = 28,975.91

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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.