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Finding the Fourth Proportional to 78,879.96, 108,892.62 and 50,633.64

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Solution

The fourth proportional to 78,879.96, 108,892.62 and 50,633.64 is: 69,898.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,879.96 : 108,892.62 = 50,633.64 : x
  2. Step 2: Convert to fraction form
    78,879.96/108,892.62 = 50,633.64/x
  3. Step 3: Cross multiply
    78,879.96x = 108,892.62 × 50,633.64
  4. Step 4: Simplify right side
    78,879.96x = 5,513,629,719.74
  5. Step 5: Solve for x
    x = 5,513,629,719.74/78,879.96
  6. Step 6: Final answer
    x = 69,898.99

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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.