Home / 83,768.40-125,638.20-31,150.80

Finding the Fourth Proportional to 83,768.40, 125,638.20 and 31,150.80

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Solution

The fourth proportional to 83,768.40, 125,638.20 and 31,150.80 is: 46,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,768.40 : 125,638.20 = 31,150.80 : x
  2. Step 2: Convert to fraction form
    83,768.40/125,638.20 = 31,150.80/x
  3. Step 3: Cross multiply
    83,768.40x = 125,638.20 × 31,150.80
  4. Step 4: Simplify right side
    83,768.40x = 3,913,730,440.56
  5. Step 5: Solve for x
    x = 3,913,730,440.56/83,768.40
  6. Step 6: Final answer
    x = 46,720.85

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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.