Home / 78,817.21-108,736.50-48,550.04

Finding the Fourth Proportional to 78,817.21, 108,736.50 and 48,550.04

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Solution

The fourth proportional to 78,817.21, 108,736.50 and 48,550.04 is: 66,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.21 : 108,736.50 = 48,550.04 : x
  2. Step 2: Convert to fraction form
    78,817.21/108,736.50 = 48,550.04/x
  3. Step 3: Cross multiply
    78,817.21x = 108,736.50 × 48,550.04
  4. Step 4: Simplify right side
    78,817.21x = 5,279,161,424.46
  5. Step 5: Solve for x
    x = 5,279,161,424.46/78,817.21
  6. Step 6: Final answer
    x = 66,979.81

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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.