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Finding the Fourth Proportional to 64,668.87, 89,245.95 and 36,374.55

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Solution

The fourth proportional to 64,668.87, 89,245.95 and 36,374.55 is: 50,198.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,668.87 : 89,245.95 = 36,374.55 : x
  2. Step 2: Convert to fraction form
    64,668.87/89,245.95 = 36,374.55/x
  3. Step 3: Cross multiply
    64,668.87x = 89,245.95 × 36,374.55
  4. Step 4: Simplify right side
    64,668.87x = 3,246,281,270.57
  5. Step 5: Solve for x
    x = 3,246,281,270.57/64,668.87
  6. Step 6: Final answer
    x = 50,198.52

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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.