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Finding the Fourth Proportional to 45,630.70, 68,433.90 and 14,040.70

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Solution

The fourth proportional to 45,630.70, 68,433.90 and 14,040.70 is: 21,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,630.70 : 68,433.90 = 14,040.70 : x
  2. Step 2: Convert to fraction form
    45,630.70/68,433.90 = 14,040.70/x
  3. Step 3: Cross multiply
    45,630.70x = 68,433.90 × 14,040.70
  4. Step 4: Simplify right side
    45,630.70x = 960,859,859.73
  5. Step 5: Solve for x
    x = 960,859,859.73/45,630.70
  6. Step 6: Final answer
    x = 21,057.31

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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.