Home / 67,129.96-100,688.43-20,383.24

Finding the Fourth Proportional to 67,129.96, 100,688.43 and 20,383.24

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Solution

The fourth proportional to 67,129.96, 100,688.43 and 20,383.24 is: 30,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,129.96 : 100,688.43 = 20,383.24 : x
  2. Step 2: Convert to fraction form
    67,129.96/100,688.43 = 20,383.24/x
  3. Step 3: Cross multiply
    67,129.96x = 100,688.43 × 20,383.24
  4. Step 4: Simplify right side
    67,129.96x = 2,052,356,433.91
  5. Step 5: Solve for x
    x = 2,052,356,433.91/67,129.96
  6. Step 6: Final answer
    x = 30,572.88

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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.