Home / 68,890.68-103,328.34-18,974.52

Finding the Fourth Proportional to 68,890.68, 103,328.34 and 18,974.52

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Solution

The fourth proportional to 68,890.68, 103,328.34 and 18,974.52 is: 28,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,890.68 : 103,328.34 = 18,974.52 : x
  2. Step 2: Convert to fraction form
    68,890.68/103,328.34 = 18,974.52/x
  3. Step 3: Cross multiply
    68,890.68x = 103,328.34 × 18,974.52
  4. Step 4: Simplify right side
    68,890.68x = 1,960,605,653.90
  5. Step 5: Solve for x
    x = 1,960,605,653.90/68,890.68
  6. Step 6: Final answer
    x = 28,459.66

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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.