Home / 83,898.50-125,906.04-54,242.78

Finding the Fourth Proportional to 83,898.50, 125,906.04 and 54,242.78

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Solution

The fourth proportional to 83,898.50, 125,906.04 and 54,242.78 is: 81,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,898.50 : 125,906.04 = 54,242.78 : x
  2. Step 2: Convert to fraction form
    83,898.50/125,906.04 = 54,242.78/x
  3. Step 3: Cross multiply
    83,898.50x = 125,906.04 × 54,242.78
  4. Step 4: Simplify right side
    83,898.50x = 6,829,493,628.39
  5. Step 5: Solve for x
    x = 6,829,493,628.39/83,898.50
  6. Step 6: Final answer
    x = 81,401.86

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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.