Home / 83,765.10-115,622.78-53,631.58

Finding the Fourth Proportional to 83,765.10, 115,622.78 and 53,631.58

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Solution

The fourth proportional to 83,765.10, 115,622.78 and 53,631.58 is: 74,028.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,765.10 : 115,622.78 = 53,631.58 : x
  2. Step 2: Convert to fraction form
    83,765.10/115,622.78 = 53,631.58/x
  3. Step 3: Cross multiply
    83,765.10x = 115,622.78 × 53,631.58
  4. Step 4: Simplify right side
    83,765.10x = 6,201,032,375.39
  5. Step 5: Solve for x
    x = 6,201,032,375.39/83,765.10
  6. Step 6: Final answer
    x = 74,028.83

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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.