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Finding the Fourth Proportional to 57,520.60, 86,229.70 and 51,299.80

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Solution

The fourth proportional to 57,520.60, 86,229.70 and 51,299.80 is: 76,904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,520.60 : 86,229.70 = 51,299.80 : x
  2. Step 2: Convert to fraction form
    57,520.60/86,229.70 = 51,299.80/x
  3. Step 3: Cross multiply
    57,520.60x = 86,229.70 × 51,299.80
  4. Step 4: Simplify right side
    57,520.60x = 4,423,566,364.06
  5. Step 5: Solve for x
    x = 4,423,566,364.06/57,520.60
  6. Step 6: Final answer
    x = 76,904.04

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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.