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Finding the Fourth Proportional to 87,308.30, 130,850.12 and 76,017.44

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Solution

The fourth proportional to 87,308.30, 130,850.12 and 76,017.44 is: 113,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,308.30 : 130,850.12 = 76,017.44 : x
  2. Step 2: Convert to fraction form
    87,308.30/130,850.12 = 76,017.44/x
  3. Step 3: Cross multiply
    87,308.30x = 130,850.12 × 76,017.44
  4. Step 4: Simplify right side
    87,308.30x = 9,946,891,146.09
  5. Step 5: Solve for x
    x = 9,946,891,146.09/87,308.30
  6. Step 6: Final answer
    x = 113,928.36

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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.