Home / 78,814.14-108,662.46-57,286.20

Finding the Fourth Proportional to 78,814.14, 108,662.46 and 57,286.20

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Solution

The fourth proportional to 78,814.14, 108,662.46 and 57,286.20 is: 78,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.14 : 108,662.46 = 57,286.20 : x
  2. Step 2: Convert to fraction form
    78,814.14/108,662.46 = 57,286.20/x
  3. Step 3: Cross multiply
    78,814.14x = 108,662.46 × 57,286.20
  4. Step 4: Simplify right side
    78,814.14x = 6,224,859,416.05
  5. Step 5: Solve for x
    x = 6,224,859,416.05/78,814.14
  6. Step 6: Final answer
    x = 78,981.51

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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.