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Finding the Fourth Proportional to 87,618, 131,520.57 and 37,722.84

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Solution

The fourth proportional to 87,618, 131,520.57 and 37,722.84 is: 56,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,618 : 131,520.57 = 37,722.84 : x
  2. Step 2: Convert to fraction form
    87,618/131,520.57 = 37,722.84/x
  3. Step 3: Cross multiply
    87,618x = 131,520.57 × 37,722.84
  4. Step 4: Simplify right side
    87,618x = 4,961,329,418.82
  5. Step 5: Solve for x
    x = 4,961,329,418.82/87,618
  6. Step 6: Final answer
    x = 56,624.55

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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.