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Finding the Fourth Proportional to 45,474.82, 68,214.76 and 13,889.68

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Solution

The fourth proportional to 45,474.82, 68,214.76 and 13,889.68 is: 20,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,474.82 : 68,214.76 = 13,889.68 : x
  2. Step 2: Convert to fraction form
    45,474.82/68,214.76 = 13,889.68/x
  3. Step 3: Cross multiply
    45,474.82x = 68,214.76 × 13,889.68
  4. Step 4: Simplify right side
    45,474.82x = 947,480,982.42
  5. Step 5: Solve for x
    x = 947,480,982.42/45,474.82
  6. Step 6: Final answer
    x = 20,835.29

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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.