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Finding the Fourth Proportional to 78,716.96, 108,631.48 and 48,522.24

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Solution

The fourth proportional to 78,716.96, 108,631.48 and 48,522.24 is: 66,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.96 : 108,631.48 = 48,522.24 : x
  2. Step 2: Convert to fraction form
    78,716.96/108,631.48 = 48,522.24/x
  3. Step 3: Cross multiply
    78,716.96x = 108,631.48 × 48,522.24
  4. Step 4: Simplify right side
    78,716.96x = 5,271,042,713.79
  5. Step 5: Solve for x
    x = 5,271,042,713.79/78,716.96
  6. Step 6: Final answer
    x = 66,961.97

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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.