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Finding the Fourth Proportional to 87,798.92, 131,719.34 and 28,634.64

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Solution

The fourth proportional to 87,798.92, 131,719.34 and 28,634.64 is: 42,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,798.92 : 131,719.34 = 28,634.64 : x
  2. Step 2: Convert to fraction form
    87,798.92/131,719.34 = 28,634.64/x
  3. Step 3: Cross multiply
    87,798.92x = 131,719.34 × 28,634.64
  4. Step 4: Simplify right side
    87,798.92x = 3,771,735,881.94
  5. Step 5: Solve for x
    x = 3,771,735,881.94/87,798.92
  6. Step 6: Final answer
    x = 42,958.80

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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.