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Finding the Fourth Proportional to 41,358.42, 57,029 and 28,589.42

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Solution

The fourth proportional to 41,358.42, 57,029 and 28,589.42 is: 39,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,358.42 : 57,029 = 28,589.42 : x
  2. Step 2: Convert to fraction form
    41,358.42/57,029 = 28,589.42/x
  3. Step 3: Cross multiply
    41,358.42x = 57,029 × 28,589.42
  4. Step 4: Simplify right side
    41,358.42x = 1,630,426,033.18
  5. Step 5: Solve for x
    x = 1,630,426,033.18/41,358.42
  6. Step 6: Final answer
    x = 39,421.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.