Home / 83,645.87-115,431.39-45,405.38

Finding the Fourth Proportional to 83,645.87, 115,431.39 and 45,405.38

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Solution

The fourth proportional to 83,645.87, 115,431.39 and 45,405.38 is: 62,659.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.87 : 115,431.39 = 45,405.38 : x
  2. Step 2: Convert to fraction form
    83,645.87/115,431.39 = 45,405.38/x
  3. Step 3: Cross multiply
    83,645.87x = 115,431.39 × 45,405.38
  4. Step 4: Simplify right side
    83,645.87x = 5,241,205,549.72
  5. Step 5: Solve for x
    x = 5,241,205,549.72/83,645.87
  6. Step 6: Final answer
    x = 62,659.47

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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.