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Finding the Fourth Proportional to 87,955.60, 131,884.80 and 28,760.80

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Solution

The fourth proportional to 87,955.60, 131,884.80 and 28,760.80 is: 43,125.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,955.60 : 131,884.80 = 28,760.80 : x
  2. Step 2: Convert to fraction form
    87,955.60/131,884.80 = 28,760.80/x
  3. Step 3: Cross multiply
    87,955.60x = 131,884.80 × 28,760.80
  4. Step 4: Simplify right side
    87,955.60x = 3,793,112,355.84
  5. Step 5: Solve for x
    x = 3,793,112,355.84/87,955.60
  6. Step 6: Final answer
    x = 43,125.31

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1.5x scale

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.