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Finding the Fourth Proportional to 99,791.40, 149,687.10 and 44,387.40

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Solution

The fourth proportional to 99,791.40, 149,687.10 and 44,387.40 is: 66,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,791.40 : 149,687.10 = 44,387.40 : x
  2. Step 2: Convert to fraction form
    99,791.40/149,687.10 = 44,387.40/x
  3. Step 3: Cross multiply
    99,791.40x = 149,687.10 × 44,387.40
  4. Step 4: Simplify right side
    99,791.40x = 6,644,221,182.54
  5. Step 5: Solve for x
    x = 6,644,221,182.54/99,791.40
  6. Step 6: Final answer
    x = 66,581.10

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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.