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Finding the Fourth Proportional to 83,745.81, 115,568.73 and 45,505.71

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Solution

The fourth proportional to 83,745.81, 115,568.73 and 45,505.71 is: 62,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,745.81 : 115,568.73 = 45,505.71 : x
  2. Step 2: Convert to fraction form
    83,745.81/115,568.73 = 45,505.71/x
  3. Step 3: Cross multiply
    83,745.81x = 115,568.73 × 45,505.71
  4. Step 4: Simplify right side
    83,745.81x = 5,259,037,112.45
  5. Step 5: Solve for x
    x = 5,259,037,112.45/83,745.81
  6. Step 6: Final answer
    x = 62,797.61

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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.