Home / 68,860.92-103,274.37-18,938.60

Finding the Fourth Proportional to 68,860.92, 103,274.37 and 18,938.60

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Solution

The fourth proportional to 68,860.92, 103,274.37 and 18,938.60 is: 28,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,860.92 : 103,274.37 = 18,938.60 : x
  2. Step 2: Convert to fraction form
    68,860.92/103,274.37 = 18,938.60/x
  3. Step 3: Cross multiply
    68,860.92x = 103,274.37 × 18,938.60
  4. Step 4: Simplify right side
    68,860.92x = 1,955,871,983.68
  5. Step 5: Solve for x
    x = 1,955,871,983.68/68,860.92
  6. Step 6: Final answer
    x = 28,403.22

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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.