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Finding the Fourth Proportional to 71,975.72, 107,951.34 and 19,373.48

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Solution

The fourth proportional to 71,975.72, 107,951.34 and 19,373.48 is: 29,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.72 : 107,951.34 = 19,373.48 : x
  2. Step 2: Convert to fraction form
    71,975.72/107,951.34 = 19,373.48/x
  3. Step 3: Cross multiply
    71,975.72x = 107,951.34 × 19,373.48
  4. Step 4: Simplify right side
    71,975.72x = 2,091,393,126.46
  5. Step 5: Solve for x
    x = 2,091,393,126.46/71,975.72
  6. Step 6: Final answer
    x = 29,056.93

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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.