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Finding the Fourth Proportional to 83,076.57, 124,615.26 and 20,747.07

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Solution

The fourth proportional to 83,076.57, 124,615.26 and 20,747.07 is: 31,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,076.57 : 124,615.26 = 20,747.07 : x
  2. Step 2: Convert to fraction form
    83,076.57/124,615.26 = 20,747.07/x
  3. Step 3: Cross multiply
    83,076.57x = 124,615.26 × 20,747.07
  4. Step 4: Simplify right side
    83,076.57x = 2,585,401,522.29
  5. Step 5: Solve for x
    x = 2,585,401,522.29/83,076.57
  6. Step 6: Final answer
    x = 31,120.71

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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.