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Finding the Fourth Proportional to 45,463.88, 68,231.82 and 19,186.76

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Solution

The fourth proportional to 45,463.88, 68,231.82 and 19,186.76 is: 28,795.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,463.88 : 68,231.82 = 19,186.76 : x
  2. Step 2: Convert to fraction form
    45,463.88/68,231.82 = 19,186.76/x
  3. Step 3: Cross multiply
    45,463.88x = 68,231.82 × 19,186.76
  4. Step 4: Simplify right side
    45,463.88x = 1,309,147,554.70
  5. Step 5: Solve for x
    x = 1,309,147,554.70/45,463.88
  6. Step 6: Final answer
    x = 28,795.33

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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.