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Finding the Fourth Proportional to 71,890.55, 107,883.81 and 25,143.42

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Solution

The fourth proportional to 71,890.55, 107,883.81 and 25,143.42 is: 37,731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,890.55 : 107,883.81 = 25,143.42 : x
  2. Step 2: Convert to fraction form
    71,890.55/107,883.81 = 25,143.42/x
  3. Step 3: Cross multiply
    71,890.55x = 107,883.81 × 25,143.42
  4. Step 4: Simplify right side
    71,890.55x = 2,712,567,946.03
  5. Step 5: Solve for x
    x = 2,712,567,946.03/71,890.55
  6. Step 6: Final answer
    x = 37,731.92

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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.