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Finding the Fourth Proportional to 45,791.80, 68,687.70 and 19,497.40

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Solution

The fourth proportional to 45,791.80, 68,687.70 and 19,497.40 is: 29,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,791.80 : 68,687.70 = 19,497.40 : x
  2. Step 2: Convert to fraction form
    45,791.80/68,687.70 = 19,497.40/x
  3. Step 3: Cross multiply
    45,791.80x = 68,687.70 × 19,497.40
  4. Step 4: Simplify right side
    45,791.80x = 1,339,231,561.98
  5. Step 5: Solve for x
    x = 1,339,231,561.98/45,791.80
  6. Step 6: Final answer
    x = 29,246.10

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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.