Home / 71,540.30-107,312.49-18,949.79

Finding the Fourth Proportional to 71,540.30, 107,312.49 and 18,949.79

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Solution

The fourth proportional to 71,540.30, 107,312.49 and 18,949.79 is: 28,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,540.30 : 107,312.49 = 18,949.79 : x
  2. Step 2: Convert to fraction form
    71,540.30/107,312.49 = 18,949.79/x
  3. Step 3: Cross multiply
    71,540.30x = 107,312.49 × 18,949.79
  4. Step 4: Simplify right side
    71,540.30x = 2,033,549,418.16
  5. Step 5: Solve for x
    x = 2,033,549,418.16/71,540.30
  6. Step 6: Final answer
    x = 28,425.23

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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.