Home / 105,687.43-145,845.49-57,939.14

Finding the Fourth Proportional to 105,687.43, 145,845.49 and 57,939.14

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Solution

The fourth proportional to 105,687.43, 145,845.49 and 57,939.14 is: 79,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,687.43 : 145,845.49 = 57,939.14 : x
  2. Step 2: Convert to fraction form
    105,687.43/145,845.49 = 57,939.14/x
  3. Step 3: Cross multiply
    105,687.43x = 145,845.49 × 57,939.14
  4. Step 4: Simplify right side
    105,687.43x = 8,450,162,263.48
  5. Step 5: Solve for x
    x = 8,450,162,263.48/105,687.43
  6. Step 6: Final answer
    x = 79,954.28

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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.