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Finding the Fourth Proportional to 67,953.67, 101,890.26 and 20,554.39

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Solution

The fourth proportional to 67,953.67, 101,890.26 and 20,554.39 is: 30,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,953.67 : 101,890.26 = 20,554.39 : x
  2. Step 2: Convert to fraction form
    67,953.67/101,890.26 = 20,554.39/x
  3. Step 3: Cross multiply
    67,953.67x = 101,890.26 × 20,554.39
  4. Step 4: Simplify right side
    67,953.67x = 2,094,292,141.24
  5. Step 5: Solve for x
    x = 2,094,292,141.24/67,953.67
  6. Step 6: Final answer
    x = 30,819.41

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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.