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Finding the Fourth Proportional to 45,381.82, 68,072.76 and 14,219.50

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Solution

The fourth proportional to 45,381.82, 68,072.76 and 14,219.50 is: 21,329.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,381.82 : 68,072.76 = 14,219.50 : x
  2. Step 2: Convert to fraction form
    45,381.82/68,072.76 = 14,219.50/x
  3. Step 3: Cross multiply
    45,381.82x = 68,072.76 × 14,219.50
  4. Step 4: Simplify right side
    45,381.82x = 967,960,610.82
  5. Step 5: Solve for x
    x = 967,960,610.82/45,381.82
  6. Step 6: Final answer
    x = 21,329.26

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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.