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Finding the Fourth Proportional to 45,486.70, 68,217.90 and 13,896.70

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Solution

The fourth proportional to 45,486.70, 68,217.90 and 13,896.70 is: 20,841.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,486.70 : 68,217.90 = 13,896.70 : x
  2. Step 2: Convert to fraction form
    45,486.70/68,217.90 = 13,896.70/x
  3. Step 3: Cross multiply
    45,486.70x = 68,217.90 × 13,896.70
  4. Step 4: Simplify right side
    45,486.70x = 948,003,690.93
  5. Step 5: Solve for x
    x = 948,003,690.93/45,486.70
  6. Step 6: Final answer
    x = 20,841.34

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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.