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Finding the Fourth Proportional to 84,044.80, 126,042.90 and 30,730.60

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Solution

The fourth proportional to 84,044.80, 126,042.90 and 30,730.60 is: 46,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,044.80 : 126,042.90 = 30,730.60 : x
  2. Step 2: Convert to fraction form
    84,044.80/126,042.90 = 30,730.60/x
  3. Step 3: Cross multiply
    84,044.80x = 126,042.90 × 30,730.60
  4. Step 4: Simplify right side
    84,044.80x = 3,873,373,942.74
  5. Step 5: Solve for x
    x = 3,873,373,942.74/84,044.80
  6. Step 6: Final answer
    x = 46,087.01

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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.