Home / 83,677.78-115,475.08-50,143.78

Finding the Fourth Proportional to 83,677.78, 115,475.08 and 50,143.78

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Solution

The fourth proportional to 83,677.78, 115,475.08 and 50,143.78 is: 69,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,677.78 : 115,475.08 = 50,143.78 : x
  2. Step 2: Convert to fraction form
    83,677.78/115,475.08 = 50,143.78/x
  3. Step 3: Cross multiply
    83,677.78x = 115,475.08 × 50,143.78
  4. Step 4: Simplify right side
    83,677.78x = 5,790,357,007.00
  5. Step 5: Solve for x
    x = 5,790,357,007.00/83,677.78
  6. Step 6: Final answer
    x = 69,198.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.