Home / 68,628.47-102,939.67-18,708.56

Finding the Fourth Proportional to 68,628.47, 102,939.67 and 18,708.56

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Solution

The fourth proportional to 68,628.47, 102,939.67 and 18,708.56 is: 28,062.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,628.47 : 102,939.67 = 18,708.56 : x
  2. Step 2: Convert to fraction form
    68,628.47/102,939.67 = 18,708.56/x
  3. Step 3: Cross multiply
    68,628.47x = 102,939.67 × 18,708.56
  4. Step 4: Simplify right side
    68,628.47x = 1,925,853,361.09
  5. Step 5: Solve for x
    x = 1,925,853,361.09/68,628.47
  6. Step 6: Final answer
    x = 28,062.02

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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.