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Finding the Fourth Proportional to 45,447.96, 68,186.92 and 13,859.32

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Solution

The fourth proportional to 45,447.96, 68,186.92 and 13,859.32 is: 20,793.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,447.96 : 68,186.92 = 13,859.32 : x
  2. Step 2: Convert to fraction form
    45,447.96/68,186.92 = 13,859.32/x
  3. Step 3: Cross multiply
    45,447.96x = 68,186.92 × 13,859.32
  4. Step 4: Simplify right side
    45,447.96x = 945,024,344.09
  5. Step 5: Solve for x
    x = 945,024,344.09/45,447.96
  6. Step 6: Final answer
    x = 20,793.55

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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.