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Finding the Fourth Proportional to 57,520.90, 86,182.80 and 45,711.10

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Solution

The fourth proportional to 57,520.90, 86,182.80 and 45,711.10 is: 68,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,520.90 : 86,182.80 = 45,711.10 : x
  2. Step 2: Convert to fraction form
    57,520.90/86,182.80 = 45,711.10/x
  3. Step 3: Cross multiply
    57,520.90x = 86,182.80 × 45,711.10
  4. Step 4: Simplify right side
    57,520.90x = 3,939,510,589.08
  5. Step 5: Solve for x
    x = 3,939,510,589.08/57,520.90
  6. Step 6: Final answer
    x = 68,488.33

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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.