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Finding the Fourth Proportional to 87,492.98, 131,260.37 and 28,328.71

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Solution

The fourth proportional to 87,492.98, 131,260.37 and 28,328.71 is: 42,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,492.98 : 131,260.37 = 28,328.71 : x
  2. Step 2: Convert to fraction form
    87,492.98/131,260.37 = 28,328.71/x
  3. Step 3: Cross multiply
    87,492.98x = 131,260.37 × 28,328.71
  4. Step 4: Simplify right side
    87,492.98x = 3,718,436,956.22
  5. Step 5: Solve for x
    x = 3,718,436,956.22/87,492.98
  6. Step 6: Final answer
    x = 42,499.83

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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.