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Finding the Fourth Proportional to 45,866.43, 68,792.25 and 12,578.76

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Solution

The fourth proportional to 45,866.43, 68,792.25 and 12,578.76 is: 18,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,866.43 : 68,792.25 = 12,578.76 : x
  2. Step 2: Convert to fraction form
    45,866.43/68,792.25 = 12,578.76/x
  3. Step 3: Cross multiply
    45,866.43x = 68,792.25 × 12,578.76
  4. Step 4: Simplify right side
    45,866.43x = 865,321,202.61
  5. Step 5: Solve for x
    x = 865,321,202.61/45,866.43
  6. Step 6: Final answer
    x = 18,866.11

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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.