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Finding the Fourth Proportional to 80,698, 111,363.24 and 45,370

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Solution

The fourth proportional to 80,698, 111,363.24 and 45,370 is: 62,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,698 : 111,363.24 = 45,370 : x
  2. Step 2: Convert to fraction form
    80,698/111,363.24 = 45,370/x
  3. Step 3: Cross multiply
    80,698x = 111,363.24 × 45,370
  4. Step 4: Simplify right side
    80,698x = 5,052,550,198.80
  5. Step 5: Solve for x
    x = 5,052,550,198.80/80,698
  6. Step 6: Final answer
    x = 62,610.60

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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.