Home / 105,738.53-145,921.08-57,991.46

Finding the Fourth Proportional to 105,738.53, 145,921.08 and 57,991.46

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Solution

The fourth proportional to 105,738.53, 145,921.08 and 57,991.46 is: 80,029.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,738.53 : 145,921.08 = 57,991.46 : x
  2. Step 2: Convert to fraction form
    105,738.53/145,921.08 = 57,991.46/x
  3. Step 3: Cross multiply
    105,738.53x = 145,921.08 × 57,991.46
  4. Step 4: Simplify right side
    105,738.53x = 8,462,176,473.98
  5. Step 5: Solve for x
    x = 8,462,176,473.98/105,738.53
  6. Step 6: Final answer
    x = 80,029.26

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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.