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Finding the Fourth Proportional to 84,458.39, 126,724.32 and 52,940.67

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Solution

The fourth proportional to 84,458.39, 126,724.32 and 52,940.67 is: 79,434.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,458.39 : 126,724.32 = 52,940.67 : x
  2. Step 2: Convert to fraction form
    84,458.39/126,724.32 = 52,940.67/x
  3. Step 3: Cross multiply
    84,458.39x = 126,724.32 × 52,940.67
  4. Step 4: Simplify right side
    84,458.39x = 6,708,870,406.09
  5. Step 5: Solve for x
    x = 6,708,870,406.09/84,458.39
  6. Step 6: Final answer
    x = 79,434.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.