Home / 105,685.97-145,844.96-57,939.64

Finding the Fourth Proportional to 105,685.97, 145,844.96 and 57,939.64

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Solution

The fourth proportional to 105,685.97, 145,844.96 and 57,939.64 is: 79,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.97 : 145,844.96 = 57,939.64 : x
  2. Step 2: Convert to fraction form
    105,685.97/145,844.96 = 57,939.64/x
  3. Step 3: Cross multiply
    105,685.97x = 145,844.96 × 57,939.64
  4. Step 4: Simplify right side
    105,685.97x = 8,450,203,823.90
  5. Step 5: Solve for x
    x = 8,450,203,823.90/105,685.97
  6. Step 6: Final answer
    x = 79,955.78

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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.