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Finding the Fourth Proportional to 87,355.97, 130,940.48 and 45,193.58

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Solution

The fourth proportional to 87,355.97, 130,940.48 and 45,193.58 is: 67,742.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,355.97 : 130,940.48 = 45,193.58 : x
  2. Step 2: Convert to fraction form
    87,355.97/130,940.48 = 45,193.58/x
  3. Step 3: Cross multiply
    87,355.97x = 130,940.48 × 45,193.58
  4. Step 4: Simplify right side
    87,355.97x = 5,917,669,007.43
  5. Step 5: Solve for x
    x = 5,917,669,007.43/87,355.97
  6. Step 6: Final answer
    x = 67,742.01

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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.