Home / 78,568.29-108,348.87-52,785.09

Finding the Fourth Proportional to 78,568.29, 108,348.87 and 52,785.09

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Solution

The fourth proportional to 78,568.29, 108,348.87 and 52,785.09 is: 72,792.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.29 : 108,348.87 = 52,785.09 : x
  2. Step 2: Convert to fraction form
    78,568.29/108,348.87 = 52,785.09/x
  3. Step 3: Cross multiply
    78,568.29x = 108,348.87 × 52,785.09
  4. Step 4: Simplify right side
    78,568.29x = 5,719,204,911.65
  5. Step 5: Solve for x
    x = 5,719,204,911.65/78,568.29
  6. Step 6: Final answer
    x = 72,792.79

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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.