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Finding the Fourth Proportional to 105,687.56, 145,844.24 and 63,269.48

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Solution

The fourth proportional to 105,687.56, 145,844.24 and 63,269.48 is: 87,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,687.56 : 145,844.24 = 63,269.48 : x
  2. Step 2: Convert to fraction form
    105,687.56/145,844.24 = 63,269.48/x
  3. Step 3: Cross multiply
    105,687.56x = 145,844.24 × 63,269.48
  4. Step 4: Simplify right side
    105,687.56x = 9,227,488,180.23
  5. Step 5: Solve for x
    x = 9,227,488,180.23/105,687.56
  6. Step 6: Final answer
    x = 87,309.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.