Home / 71,210.26-106,815.75-18,619.86

Finding the Fourth Proportional to 71,210.26, 106,815.75 and 18,619.86

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Solution

The fourth proportional to 71,210.26, 106,815.75 and 18,619.86 is: 27,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.26 : 106,815.75 = 18,619.86 : x
  2. Step 2: Convert to fraction form
    71,210.26/106,815.75 = 18,619.86/x
  3. Step 3: Cross multiply
    71,210.26x = 106,815.75 × 18,619.86
  4. Step 4: Simplify right side
    71,210.26x = 1,988,894,310.80
  5. Step 5: Solve for x
    x = 1,988,894,310.80/71,210.26
  6. Step 6: Final answer
    x = 27,929.88

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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.