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Finding the Fourth Proportional to 84,400.80, 126,620.40 and 49,322.40

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Solution

The fourth proportional to 84,400.80, 126,620.40 and 49,322.40 is: 73,994.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,400.80 : 126,620.40 = 49,322.40 : x
  2. Step 2: Convert to fraction form
    84,400.80/126,620.40 = 49,322.40/x
  3. Step 3: Cross multiply
    84,400.80x = 126,620.40 × 49,322.40
  4. Step 4: Simplify right side
    84,400.80x = 6,245,222,016.96
  5. Step 5: Solve for x
    x = 6,245,222,016.96/84,400.80
  6. Step 6: Final answer
    x = 73,994.82

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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.