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Finding the Fourth Proportional to 84,404.58, 126,543.80 and 51,116.54

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Solution

The fourth proportional to 84,404.58, 126,543.80 and 51,116.54 is: 76,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,404.58 : 126,543.80 = 51,116.54 : x
  2. Step 2: Convert to fraction form
    84,404.58/126,543.80 = 51,116.54/x
  3. Step 3: Cross multiply
    84,404.58x = 126,543.80 × 51,116.54
  4. Step 4: Simplify right side
    84,404.58x = 6,468,481,214.45
  5. Step 5: Solve for x
    x = 6,468,481,214.45/84,404.58
  6. Step 6: Final answer
    x = 76,636.61

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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.