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Finding the Fourth Proportional to 84,453.67, 126,825.35 and 74,987.34

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Solution

The fourth proportional to 84,453.67, 126,825.35 and 74,987.34 is: 112,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,453.67 : 126,825.35 = 74,987.34 : x
  2. Step 2: Convert to fraction form
    84,453.67/126,825.35 = 74,987.34/x
  3. Step 3: Cross multiply
    84,453.67x = 126,825.35 × 74,987.34
  4. Step 4: Simplify right side
    84,453.67x = 9,510,294,790.54
  5. Step 5: Solve for x
    x = 9,510,294,790.54/84,453.67
  6. Step 6: Final answer
    x = 112,609.61

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1.5x scale

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.