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Finding the Fourth Proportional to 83,139.80, 124,709.70 and 33,227.60

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Solution

The fourth proportional to 83,139.80, 124,709.70 and 33,227.60 is: 49,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,139.80 : 124,709.70 = 33,227.60 : x
  2. Step 2: Convert to fraction form
    83,139.80/124,709.70 = 33,227.60/x
  3. Step 3: Cross multiply
    83,139.80x = 124,709.70 × 33,227.60
  4. Step 4: Simplify right side
    83,139.80x = 4,143,804,027.72
  5. Step 5: Solve for x
    x = 4,143,804,027.72/83,139.80
  6. Step 6: Final answer
    x = 49,841.40

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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.