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Finding the Fourth Proportional to 67,650.80, 101,499.89 and 20,903.67

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Solution

The fourth proportional to 67,650.80, 101,499.89 and 20,903.67 is: 31,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,650.80 : 101,499.89 = 20,903.67 : x
  2. Step 2: Convert to fraction form
    67,650.80/101,499.89 = 20,903.67/x
  3. Step 3: Cross multiply
    67,650.80x = 101,499.89 × 20,903.67
  4. Step 4: Simplify right side
    67,650.80x = 2,121,720,101.08
  5. Step 5: Solve for x
    x = 2,121,720,101.08/67,650.80
  6. Step 6: Final answer
    x = 31,362.83

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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.