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Finding the Fourth Proportional to 87,170, 130,825.06 and 45,062.46

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Solution

The fourth proportional to 87,170, 130,825.06 and 45,062.46 is: 67,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,170 : 130,825.06 = 45,062.46 : x
  2. Step 2: Convert to fraction form
    87,170/130,825.06 = 45,062.46/x
  3. Step 3: Cross multiply
    87,170x = 130,825.06 × 45,062.46
  4. Step 4: Simplify right side
    87,170x = 5,895,299,033.25
  5. Step 5: Solve for x
    x = 5,895,299,033.25/87,170
  6. Step 6: Final answer
    x = 67,629.91

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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.