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Finding the Fourth Proportional to 69,650.88, 104,493.60 and 20,402.88

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Solution

The fourth proportional to 69,650.88, 104,493.60 and 20,402.88 is: 30,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,650.88 : 104,493.60 = 20,402.88 : x
  2. Step 2: Convert to fraction form
    69,650.88/104,493.60 = 20,402.88/x
  3. Step 3: Cross multiply
    69,650.88x = 104,493.60 × 20,402.88
  4. Step 4: Simplify right side
    69,650.88x = 2,131,970,381.57
  5. Step 5: Solve for x
    x = 2,131,970,381.57/69,650.88
  6. Step 6: Final answer
    x = 30,609.38

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1.5x scale

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.