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Finding the Fourth Proportional to 85,919.37, 118,568.48 and 47,684.68

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Solution

The fourth proportional to 85,919.37, 118,568.48 and 47,684.68 is: 65,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.37 : 118,568.48 = 47,684.68 : x
  2. Step 2: Convert to fraction form
    85,919.37/118,568.48 = 47,684.68/x
  3. Step 3: Cross multiply
    85,919.37x = 118,568.48 × 47,684.68
  4. Step 4: Simplify right side
    85,919.37x = 5,653,899,492.04
  5. Step 5: Solve for x
    x = 5,653,899,492.04/85,919.37
  6. Step 6: Final answer
    x = 65,804.71

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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.