Home / 81,029.26-111,820.70-45,220.78

Finding the Fourth Proportional to 81,029.26, 111,820.70 and 45,220.78

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Solution

The fourth proportional to 81,029.26, 111,820.70 and 45,220.78 is: 62,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.26 : 111,820.70 = 45,220.78 : x
  2. Step 2: Convert to fraction form
    81,029.26/111,820.70 = 45,220.78/x
  3. Step 3: Cross multiply
    81,029.26x = 111,820.70 × 45,220.78
  4. Step 4: Simplify right side
    81,029.26x = 5,056,619,526.97
  5. Step 5: Solve for x
    x = 5,056,619,526.97/81,029.26
  6. Step 6: Final answer
    x = 62,404.86

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1.5x scale

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.