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Finding the Fourth Proportional to 87,185.28, 130,708.80 and 34,608

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Solution

The fourth proportional to 87,185.28, 130,708.80 and 34,608 is: 51,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,185.28 : 130,708.80 = 34,608 : x
  2. Step 2: Convert to fraction form
    87,185.28/130,708.80 = 34,608/x
  3. Step 3: Cross multiply
    87,185.28x = 130,708.80 × 34,608
  4. Step 4: Simplify right side
    87,185.28x = 4,523,570,150.40
  5. Step 5: Solve for x
    x = 4,523,570,150.40/87,185.28
  6. Step 6: Final answer
    x = 51,884.56

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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.