Home / 83,999.47-125,997.58-20,819.72

Finding the Fourth Proportional to 83,999.47, 125,997.58 and 20,819.72

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Solution

The fourth proportional to 83,999.47, 125,997.58 and 20,819.72 is: 31,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,999.47 : 125,997.58 = 20,819.72 : x
  2. Step 2: Convert to fraction form
    83,999.47/125,997.58 = 20,819.72/x
  3. Step 3: Cross multiply
    83,999.47x = 125,997.58 × 20,819.72
  4. Step 4: Simplify right side
    83,999.47x = 2,623,234,126.73
  5. Step 5: Solve for x
    x = 2,623,234,126.73/83,999.47
  6. Step 6: Final answer
    x = 31,229.18

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1.5x scale

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.