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Finding the Fourth Proportional to 57,800.20, 86,570.70 and 56,504.20

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Solution

The fourth proportional to 57,800.20, 86,570.70 and 56,504.20 is: 84,629.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,800.20 : 86,570.70 = 56,504.20 : x
  2. Step 2: Convert to fraction form
    57,800.20/86,570.70 = 56,504.20/x
  3. Step 3: Cross multiply
    57,800.20x = 86,570.70 × 56,504.20
  4. Step 4: Simplify right side
    57,800.20x = 4,891,608,146.94
  5. Step 5: Solve for x
    x = 4,891,608,146.94/57,800.20
  6. Step 6: Final answer
    x = 84,629.61

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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.