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Finding the Fourth Proportional to 83,755.70, 125,633.55 and 82,880.90

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Solution

The fourth proportional to 83,755.70, 125,633.55 and 82,880.90 is: 124,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,755.70 : 125,633.55 = 82,880.90 : x
  2. Step 2: Convert to fraction form
    83,755.70/125,633.55 = 82,880.90/x
  3. Step 3: Cross multiply
    83,755.70x = 125,633.55 × 82,880.90
  4. Step 4: Simplify right side
    83,755.70x = 10,412,621,694.20
  5. Step 5: Solve for x
    x = 10,412,621,694.20/83,755.70
  6. Step 6: Final answer
    x = 124,321.35

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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.