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Finding the Fourth Proportional to 87,059.67, 130,414.54 and 45,419.19

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Solution

The fourth proportional to 87,059.67, 130,414.54 and 45,419.19 is: 68,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,059.67 : 130,414.54 = 45,419.19 : x
  2. Step 2: Convert to fraction form
    87,059.67/130,414.54 = 45,419.19/x
  3. Step 3: Cross multiply
    87,059.67x = 130,414.54 × 45,419.19
  4. Step 4: Simplify right side
    87,059.67x = 5,923,322,771.02
  5. Step 5: Solve for x
    x = 5,923,322,771.02/87,059.67
  6. Step 6: Final answer
    x = 68,037.51

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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.