Home / 68,731.28-103,093.07-18,807.71

Finding the Fourth Proportional to 68,731.28, 103,093.07 and 18,807.71

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Solution

The fourth proportional to 68,731.28, 103,093.07 and 18,807.71 is: 28,210.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,731.28 : 103,093.07 = 18,807.71 : x
  2. Step 2: Convert to fraction form
    68,731.28/103,093.07 = 18,807.71/x
  3. Step 3: Cross multiply
    68,731.28x = 103,093.07 × 18,807.71
  4. Step 4: Simplify right side
    68,731.28x = 1,938,944,868.32
  5. Step 5: Solve for x
    x = 1,938,944,868.32/68,731.28
  6. Step 6: Final answer
    x = 28,210.51

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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.