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Finding the Fourth Proportional to 87,679.80, 131,388.12 and 52,580.88

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Solution

The fourth proportional to 87,679.80, 131,388.12 and 52,580.88 is: 78,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.80 : 131,388.12 = 52,580.88 : x
  2. Step 2: Convert to fraction form
    87,679.80/131,388.12 = 52,580.88/x
  3. Step 3: Cross multiply
    87,679.80x = 131,388.12 × 52,580.88
  4. Step 4: Simplify right side
    87,679.80x = 6,908,502,971.15
  5. Step 5: Solve for x
    x = 6,908,502,971.15/87,679.80
  6. Step 6: Final answer
    x = 78,792.41

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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.