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Finding the Fourth Proportional to 87,575, 131,328.48 and 28,396.40

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Solution

The fourth proportional to 87,575, 131,328.48 and 28,396.40 is: 42,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,575 : 131,328.48 = 28,396.40 : x
  2. Step 2: Convert to fraction form
    87,575/131,328.48 = 28,396.40/x
  3. Step 3: Cross multiply
    87,575x = 131,328.48 × 28,396.40
  4. Step 4: Simplify right side
    87,575x = 3,729,256,049.47
  5. Step 5: Solve for x
    x = 3,729,256,049.47/87,575
  6. Step 6: Final answer
    x = 42,583.57

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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.