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Finding the Fourth Proportional to 71,601.76, 107,402.64 and 18,293.86

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Solution

The fourth proportional to 71,601.76, 107,402.64 and 18,293.86 is: 27,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,601.76 : 107,402.64 = 18,293.86 : x
  2. Step 2: Convert to fraction form
    71,601.76/107,402.64 = 18,293.86/x
  3. Step 3: Cross multiply
    71,601.76x = 107,402.64 × 18,293.86
  4. Step 4: Simplify right side
    71,601.76x = 1,964,808,859.79
  5. Step 5: Solve for x
    x = 1,964,808,859.79/71,601.76
  6. Step 6: Final answer
    x = 27,440.79

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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.