Home / 68,179.52-102,275.21-20,805.29

Finding the Fourth Proportional to 68,179.52, 102,275.21 and 20,805.29

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Solution

The fourth proportional to 68,179.52, 102,275.21 and 20,805.29 is: 31,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,179.52 : 102,275.21 = 20,805.29 : x
  2. Step 2: Convert to fraction form
    68,179.52/102,275.21 = 20,805.29/x
  3. Step 3: Cross multiply
    68,179.52x = 102,275.21 × 20,805.29
  4. Step 4: Simplify right side
    68,179.52x = 2,127,864,788.46
  5. Step 5: Solve for x
    x = 2,127,864,788.46/68,179.52
  6. Step 6: Final answer
    x = 31,209.74

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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.