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Finding the Fourth Proportional to 45,906.65, 68,860.28 and 12,630.23

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Solution

The fourth proportional to 45,906.65, 68,860.28 and 12,630.23 is: 18,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,906.65 : 68,860.28 = 12,630.23 : x
  2. Step 2: Convert to fraction form
    45,906.65/68,860.28 = 12,630.23/x
  3. Step 3: Cross multiply
    45,906.65x = 68,860.28 × 12,630.23
  4. Step 4: Simplify right side
    45,906.65x = 869,721,377.99
  5. Step 5: Solve for x
    x = 869,721,377.99/45,906.65
  6. Step 6: Final answer
    x = 18,945.43

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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.