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Finding the Fourth Proportional to 87,915, 131,878.58 and 35,324.44

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Solution

The fourth proportional to 87,915, 131,878.58 and 35,324.44 is: 52,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915 : 131,878.58 = 35,324.44 : x
  2. Step 2: Convert to fraction form
    87,915/131,878.58 = 35,324.44/x
  3. Step 3: Cross multiply
    87,915x = 131,878.58 × 35,324.44
  4. Step 4: Simplify right side
    87,915x = 4,658,536,986.50
  5. Step 5: Solve for x
    x = 4,658,536,986.50/87,915
  6. Step 6: Final answer
    x = 52,989.10

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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.