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Finding the Fourth Proportional to 40,640.20, 60,960.30 and 19,849.12

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Solution

The fourth proportional to 40,640.20, 60,960.30 and 19,849.12 is: 29,773.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.20 : 60,960.30 = 19,849.12 : x
  2. Step 2: Convert to fraction form
    40,640.20/60,960.30 = 19,849.12/x
  3. Step 3: Cross multiply
    40,640.20x = 60,960.30 × 19,849.12
  4. Step 4: Simplify right side
    40,640.20x = 1,210,008,309.94
  5. Step 5: Solve for x
    x = 1,210,008,309.94/40,640.20
  6. Step 6: Final answer
    x = 29,773.68

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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.