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Finding the Fourth Proportional to 40,534.48, 60,811.92 and 12,455.92

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Solution

The fourth proportional to 40,534.48, 60,811.92 and 12,455.92 is: 18,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,534.48 : 60,811.92 = 12,455.92 : x
  2. Step 2: Convert to fraction form
    40,534.48/60,811.92 = 12,455.92/x
  3. Step 3: Cross multiply
    40,534.48x = 60,811.92 × 12,455.92
  4. Step 4: Simplify right side
    40,534.48x = 757,468,410.57
  5. Step 5: Solve for x
    x = 757,468,410.57/40,534.48
  6. Step 6: Final answer
    x = 18,687.01

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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.