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Finding the Fourth Proportional to 87,855.40, 131,750.70 and 43,467.40

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Solution

The fourth proportional to 87,855.40, 131,750.70 and 43,467.40 is: 65,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.40 : 131,750.70 = 43,467.40 : x
  2. Step 2: Convert to fraction form
    87,855.40/131,750.70 = 43,467.40/x
  3. Step 3: Cross multiply
    87,855.40x = 131,750.70 × 43,467.40
  4. Step 4: Simplify right side
    87,855.40x = 5,726,860,377.18
  5. Step 5: Solve for x
    x = 5,726,860,377.18/87,855.40
  6. Step 6: Final answer
    x = 65,185.07

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1.5x scale

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.